Ground-breaking new footage captures nuclear reaction that unlocks deep space travel – Essex Magazine

World first footage showing a never before seen glimpse into the future of space travel technology has been recorded by scientists in the UK.

Specialist cameras have filmed close-up footage of a rocket firing up using deep sea protective cases and shielding to protect the cameras from destruction.

Scientists at Pulsar Fusion based in Bletchley captured the 4k footage facing into the nozzle of a hyper-fast rocket engine, which is designed for use in deep space.

In the video, viewers can see a ring of plasma at the core burning at millions of degrees hotter than any gas on Earth and confined by an electromagnetic field which is firing out particles at speeds of over 20km a second.

The fuel heavy, fiery exhausts of todays space rockets will eventually be replaced by super-hot, plasma thrusters as seen in the video.

This type of thruster is not suitable for launching spacecraft but becomes effective once the craft has left the atmosphere.

Pulsar thrusters are able to operate at speeds far greater than conventional combustion rockets, so these could provide the key to reducing mission times and costs to far-off planets currently out of our reach.

Following this milestone, the privately owned UK business now plans to test the technology in space.

Dr James Lambert, head of operations at Pulsar Fusion said Pulsar has earned its place as one of the most advanced, privately owned space propulsion companies in the World. We are delighted with the result.

Pulsar Fusion CEO Richard Dinan said Pulsar will now commence testing of this technology in real world conditions with our partners in the USA, whilst simultaneously beginning construction of our larger, next generation device due for completion in 2022.

This project aims to operate a plasma firing at temperatures of several hundred million degrees and will involve advanced materials currently being developed alongside government fusion reactors.

Pulsar Fusion specialises in developing Nuclear Fusion technology for use as propulsion. Whilst governments plan to demonstrate the worlds first nuclear fusion reactor (ITER) in 2025, Pulsar Fusion, a nimble start up in the UK, aims to have demonstrated nuclear fusion rocket engines in space before fusion technology is harnessed for grid power supply on Earth.

Fusion rocket engines are useful technology using nuclear fusion technology today, whilst fusion for energy may still be several decades away due extensive additional technological requirements and the multi-national and typically highly bureaucratic power station timescales.

Fusion rockets do not require large steam turbines and much of the expensive equipment necessary for a power station build project that can take many years to finance and construct.

However, by 2100, world governments predict nuclear fusion will be the dominant power supply of our planet, replacing nuclear fission.

Nuclear Fusion rocket technology has the ability to half mission times to Mars and could open up the possibility of visiting planets outside of our solar system.

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Ground-breaking new footage captures nuclear reaction that unlocks deep space travel - Essex Magazine

NASA Updates Planetary Protection Policies for Space Travel to the Moon and Mars – Interesting Engineering

As human spaceflight forges forwards, NASA is attempting to protect the Moon, Mars and Earth from any contamination by introducing two new directives.

On Thursday, the American space agency unveiled the new NASA Interim Directives (NIDs) that lay out the new requirements for human and robotic missions to and from the Moon, Mars, and Earth.

SEE ALSO: THE MOON VANISHED IN 1110, SCIENTISTS MAY NOW KNOW WHY

The point of the new directives is to protect these planetary bodies from potential biological contamination coming from Earth and ultimately that could lead to compromised scientific research.

One of the NIDs focuses on potential forward biological contamination, which is brought from Earth to another planetary object, and ultimately to the Moon.

The second NID deals with Mars and looks at both forward and backward contamination, which includes contamination brought back to Earth from another cosmic body too.

"We're trying to balance the interests of the science community, the interest of the human exploration community, and the interest of the commercial community," said NASA Administrator Jim Bridenstine.

It's important to leave "a pristine environment so we have the ability to know that what we discover in the future was not something that was left there by us ," continued Bridenstine.

"We have to make sure that we are inventorying every kind of biological substance and even nonbiological substance organics for example that could leave something behind on the moon that could be problematic for future research."

In speaking of the missions to the Moon, Associate Administrator of NASA's Science Mission Directorate, Thomas Zurbuchen, stated "These sites have immense scientific value in shaping our understanding of the history of our planet, the moon, and the solar system."

Currently, neither of the two NIDs is set in stone. These are interim directives and not policy ones, so there is still room for changes when the need arises down the road.

As Bridenstine said himself "It's probably going to be modified a lot of times now and into the future."

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Voxprotocol Launches Among The Stars, a Space Themed Voice App for Amazon Alexa – PRNewswire

DENVER, July 16, 2020 /PRNewswire/ --Voxprotocol, the global leader in voice app entertainment, today announced the launch of its Alexa exclusive voice app "Among The Stars," focusing on the history and exciting future of spaceflight.

Among The Stars is a sonically immersive edutainment voice app that focuses on the much-needed modernization of historical space travel audio, which is currently scattered across different websites and in many different formats.

"Using our proprietary audio techniques, we can take lengthy and sometimes hard to listen to files and create informative snackable 2 to 4-minute sized space-themed audio missions. Allowing a new generation of Travelers to enjoy easily," says Steven Austine, Founder and CEO of Voxprotocol. "And in celebration of the upcoming anniversary of the Apollo 11 lunar landing, we hope you enjoy Mission 1969."

To access just say "Alexa, launch Among The Stars" to your Alexa enabled device: an Amazon Echo Show, Echo Dot, Fire TV, or even a mobile device with the Alexa app installed and start experiencing your time Among The Stars.

Link on Amazon https://www.amazon.com/dp/B08CNH1VCM

About VoxprotocolBased in Denver and founded in 2018, Voxprotocol is a leader in voice app content creation. The company produces a range of voicefirst entertainment and distributes its titles through the Amazon Alexa Skills Store. Their mission is to create engaging voice entertainment apps that inspire people to fully embrace the change in how they can now interact, listen, and play.

Contact Website: https://voxprotocol.comKim Garvey 650.491.9910 [emailprotected]

SOURCE Voxprotocol

https://voxprotocol.com

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Voxprotocol Launches Among The Stars, a Space Themed Voice App for Amazon Alexa - PRNewswire

CASETiFY launches new collection of NASA iPhone Cases and Apple accessories – 9to5Toys

Today, CASETiFY is launching its latest collection of iPhone cases and other Apple accessories in partnership with NASA. Across the collection, youll find plenty of imagery inspired by the space agency, including iconic logos, blueprints, and more. Alongside cases for the latest handsets, theres also leather Apple Watch bands, and much more on the way. Head below for a closer look at the new NASA accessories and all the details for how to score them for yourself.

Todays new CASETiFY drop continues the brands ongoing theme of partnering with iconic properties like Pokmon, Coca-Cola, and more. But now were getting arguably the most unique batch of releases yet thanks to a collaboration with NASA.

All of the upcoming NASA iPhone cases sport out of this world designs, just like youd expect. Some are decked out in iconic imagery like the old school NASA logo all the way to depictions of the Space Shuttle schematics and more. CASETiFY has cases for just about every current-generation iPhone, so youll be covered whether youre rocking a new iPhone 11 Pro or iPhone 7.

Just about all of the cases will sell for between $45 and $55 depending on which style you opt for. Each of CASETiFYs releases will come decked out in various prints, so youll be able to choose what level of protection is right for you, as well. Though some offerings are only available on the newer smartphones from Apple.

Alongside the iPhone cases, CASETiFY also has plenty of other Apple accessories available in its new NASA collection. From leather Apple Watch bands with the agencys insignia to AirPods covers and more, there are plenty of ways to represent your love of space travel.

CASETiFY will be launching its collection of NASA iPhone cases and other accessories on July 30. Youll be able to bring home all of the upcoming gear starting under $40.Right now, you can sign up for a waitlist, which will give you priority access to everything included in the collection once it launches.

Just about every time CASETiFY decides to drop a new product line, its accessories sell out within a few days of hitting its online storefront. So if any of the NASA designs catch your eye, its best to pick them up sooner than later. Like just about all of CASETiFYs collaborations, this batch of new gear is part of a limited run.

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How Amazons Jeff Bezos and Teslas Elon Musk have inspired an artist – Gadgets Now

Amazon CEO and Blue Origins founder Jeff Bezos is the richest person on Earth while Tesla and SpaceX CEO Elon Musk is one of the most well-known tech innovators globally. Apart from being tech billionaires, what these two have in common is a passion for space travel and exploration, which, if we just were to go by the amount of tweets and compare, Musk pursues doggedly like a true believer in his cause, while Bezos is comparatively more secretive about his plans for space. Lincoln Townley, a UK-based contemporary artist, has tried to capture the age of the private space travel with his new art collection called the Universe, and says that the space programs of tech tycoons like Jeff Bezos, Elon Musk and Richard Branson (Virgin Galactic) have served as inspiration for his latest art collection, as per a report by Business Insider.

Universe will be exhibited in Saatchi Gallery, London, in September. According to the report, Lincoln Townley is known for making portraits of Hollywood royalty and that Sir Michael Caine even referred to him as the next Andy Warhol in 2016.

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How Amazons Jeff Bezos and Teslas Elon Musk have inspired an artist - Gadgets Now

Space Perspective wants to take you on a ride through the stratosphere – Lifestyle Asia

Over the past decade or so, the likes of Space X and Virgin Atlantic have been at the forefront of making commercial space flights viable.

While this is still being worked on, Space Perspective is looking at things from a different perspective to say the least. The company will be offering a trip to the edge of space onboard the Neptune Space Balloon.

It will function very much like the high-altitude weather balloons, only at a much larger scale. There will be an attached pressurised capsule below, able to accommodate up to eight passengers at once. It will launch from the NASAs Kennedy Space Center in Florida, USA and head in an upwards trajectory towards the Milky Way Galaxy.

You will travel upwards of 100,000 feet above the ground before stopping at the very edge of outer space. Here, the balloon will anchor itself for two hours, allowing you to take in the entire view from all angles. This suborbital flight will allow you to experience and witness firsthand the true curvature of the planet. To sweeten the deal, amenities like an onboard bar will also be available.

Dont worry about attire or dress codes with this trip; Space Perspective offers a shirt-sleeves environment this means that you wont have the chance to put on a spacesuit.

As you descend, the balloon will make a sea landing, from which you will transfer onto a ship and taken back to shore. The entire experience begins at the break of dawn and will go on for roughly six hours. According to Space Perspective, the Neptune balloon could be starting commercial flights as early as 2021.

If youre a true flat earther, this is the best way to know for sure if the earth truly is flat.

This article was first published on Lifestyle Asia KL. All images courtesy of Space Perspective.

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Space Perspective wants to take you on a ride through the stratosphere - Lifestyle Asia

New electric propulsion chamber explores the future of space travel – Space Daily

Deep inside a laboratory at The Aerospace Corporation's El Segundo campus, scientists are recreating the vacuum of space here on Earth.

Aerospace's electric propulsion lab specializes in testing electric thrusters in space-like conditions, and they recently installed a new vacuum chamber that will enable them to test the newer, high-powered thrusters needed for future space exploration.

"This chamber adds not just to Aerospace's testing capability, but adds to the world's testing capability," said Rostislav Spektor, Laboratory Manager in Electric Propulsion and Plasma Science. "When it becomes operational, it will be the best electric propulsion testing facility in the world."

Why Electric Propulsion?Everyone is familiar with the sight of fire and smoke pouring out of the bottom of a rocket using chemical propulsion.

Electric propulsion takes a different approach, harnessing electric energy to ionize gas into a plasma, which is accelerated out of the thruster through a combination of electric and magnetic forces.

Electric propulsion produces significantly less thrust than chemical propulsion but is much more efficient in terms of the amount of fuel used. It's too weak to launch rockets through the atmosphere, but once in space, the lack of gravity allows electric propulsion thrusters' true potential to shine.

"It's the Tortoise and the Hare. Electric propulsion is slow but steady and chemical propulsion starts very fast, but runs out of steam quickly," Spektor said.

Historically, electric propulsion has mostly been used for station-keeping of satellites. But its highly efficient nature opens up possibilities for long-distance space exploration missions with the small but constant thrust building up over time, accelerating the spacecraft to a very high velocity.

A Testing PowerhouseIn order to make those long journeys, however, scientists need to be able to trust that the thrusters will perform consistently and reliably over the duration of the mission.

That's where electric propulsion vacuum chambers come into play. These school bus-sized devices are outfitted with a series of cryopumps that make the chamber very cold. When the pumps run, the air in the chamber sticks to the chamber sides, similar to condensation on a cold glass of water on a hot day. With the air gone, the chamber simulates the vacuum of space, and the team can place electric thrusters inside for testing.

"Electric propulsion devices perform differently in space than they do on Earth. The relationship isn't linear, which can make predicting exactly how it will perform difficult," said Spektor. "The closer you are to test-as-you-fly conditions, the closer you are to measuring performance you would expect in orbit."

The new chamber, 14 ft in diameter and 30 ft long, is considerably larger than the lab's older 8-foot diameter chamber, which means it has more room for cryopumps. The Aerospace team considered buying commercial pumps, but in the end decided to design their own pumping system to ensure optimal performance.

The chamber body was delivered in four segments over the course of a week and then bolted together. The custom-designed cryopump system will be installed over the next six months, followed by the diagnostic system.

End-to-End Electric Propulsion TestingAs a federally-funded research and development center (FFRDC), Aerospace is not allowed to produce flight hardware that could compete with commercial companies.

Instead, Aerospace provides end-to-end testing of electric propulsion thrusters, from measuring thrust, exhaust velocity and specific impulse to more advanced work like plume characterization, which helps quantify the risk of damage to other parts of the spacecraft. The lab also offers non-invasive testing using laser and optical diagnostics.

"We've carved ourselves a niche in electric propulsion as the testing warehouse. All the commercial companies come to us for unbiased testing and measurement," Spektor said. "We have probably the most comprehensive set of electric propulsion diagnostics that you could find anywhere in the world."

The recently installed vacuum chamber, with its increased pumping speed, is just the latest addition to this laboratory's arsenal of testing equipment.

"As electric propulsion devices get larger and more powerful, higher pumping speeds are needed to maintain the proper pressure ratio and allow for accurate testing," said Spektor. "If there are any potential issues with the thruster, you might not see them at lower pumping speeds because you're not at the conditions you are in space."

Aerospace is equipped to test the latest large electric propulsion devices or smaller micro-thrusters that go on CubeSats, with tests spanning from just a few hours up to more than a year.

The Future of Electric PropulsionWhen operational, the expanded testing facility will allow the lab to double its workload, providing testing services to military and civil customers, as well as a growing field of commercial manufacturers.

One of the first customers will be NASA, testing its 12.5-kilowatt Advanced Electric Propulsion System (AEPS) thruster, which is part of the Gateway mission to orbit the moon.

Other customers are also lining up to access the world-class chamber and benefit from Aerospace's expertise.

"There are new potential applications developing with our national security space customers for high power electric propulsion," said Tom Curtiss, director of the Propulsion Science Department. "Watching those come to fruition will be a great thing, and we'll be able to help reduce the costs of qualifying and developing technology for the next 10 or 20 years."

Related LinksAerospace CorporationRocket Science News at Space-Travel.Com

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Duckweed is an incredible, radiation-fighting astronaut food and by changing how it is grown, we made it better – The Conversation US

The Research Brief is a short take about interesting academic work.

Current industrialized food systems were optimized for a single goal growing the maximum amount of food for the least amount of money. But when room and supplies are limited like during space travel you need to optimize for a different set of goals to meet the needs of the people you are trying to feed.

NASA and the Translational Research Institute for Space Health asked my lab to figure out how to grow an edible plant for long-term space missions where fresh, nutritious food must be produced in tight quarters and with limited resources. To do this, we turned to a plant called duckweed.

Duckweed is a small floating plant that grows on the surface of ponds. It is commonly eaten in Asia but is mostly considered a pest plant in the U.S. as it can quickly take over ponds. But duckweed is a remarkable plant. It is one of the fastest-growing plants on Earth, is the most proteindense plant on the planet and also produces an abundance of important micronutrients. Two of these micronutrients are the inflammation-fighting antioxidants zeaxanthin and lutein. Zeaxanthin is the more potent of the two, but is hard to get from most leafy greens since fast-growing plants accumulate zeaxanthin only under extremely bright lights.

I proposed to the Translational Research Institute for Space Health that in addition to maximizing nutritional, space and resource efficiency, we also try to optimize the production of these antioxidants.

With just a little bit of experimentation, our team determined that under relatively low-intensity light less than half as intense as midday sun on a clear summer day duckweed accumulates more zeaxanthin than other fast-growing plants do in full sunlight while still maintaining the same incredible growth rate and other nutritional attributes that make it the perfect plant for a space farm.

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We are also testing another strategy that would grow duckweed in even lower-intensity light but would supplement those light levels with a few pulses of high-intensity light. In other plants, my team discovered that this can trigger high amounts of zeaxanthin accumulation and fast growth and, relevant to a spaceship, would cost less energy.

From these experiments, we are planning several customized growth conditions to optimize zeaxanthin production for a variety of different applications whether it be a spaceship a greenhouse or even outdoors.

Due to the ionizing radiation in space, astronauts are susceptible to chronic inflammation and diseases caused by cellular oxidation. Zeaxanthin and lutein have been shown to fight radiation damage as well as eye disease, another common health problem that astronauts experience.

Many essential micronutrients have a finite shelf life often only a few months. As astronauts begin going on longer missions, the only way they will be able to get these antioxidants is to grow them on board.

While we know that intense light makes duckweed and other plants produce zeaxanthin, plants quickly remove it from their leaves when light levels drop. To meet the specific challenge of producing large amounts of zeaxanthin, more work is needed on how to coax leafy greens to retain zeaxanthin post-harvest.

Our project used duckweed grown in sterile environments we used plants stripped of the microbes that normally occur in the water on which duckweeds float. Since researchers know that optimizing soil microbes can increase plant productivity, our next goal will be to explore opportunities to further enhance duckweed productivity by experimenting with beneficial microbial communities.

Duckweed is already grown for many uses on Earth, and duckweed salad might be a high-protein staple in the diets of many future space explorers. But this work is also proof that win-win solutions to food production are possible.

With the right know-how, it is possible to make small changes to a few variables in how plants are grown and get them to produce more micronutrients. Similar approaches taken with other crops could benefit people across the world, not just astronauts. On Earth, slight changes in how people grow food, backed by scientific research like ours, offer opportunities to greatly improve food production systems such that they need less, produce more and keep people healthier.

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Duckweed is an incredible, radiation-fighting astronaut food and by changing how it is grown, we made it better - The Conversation US

WVU Robotic Technology Center to play crucial role in the future of in-space assembly – WBOY.com

MORGANTOWN, W.Va. The West Virginia University Robotic Technology Center (RTC) is playing a role in the space race that is underway throughout the globe.

This is according to a WVU press release, which stated that Maxar Technologies, a trusted partner and innovator in earth intelligence and space infrastructure, has announced more than $2 million in funding for the RTC, from a $142 million NASA funded project. The project is performing the first in-space assembly demonstration of a satellite using a lightweight robotic arm. RTC will be building that robotic arm called the Space Infrastructure Dexterous Robot (SPIDER) and it will be attached to the satellite servicing spacecraft bus being built by Maxar.

Well myself and all of the team, we all are extremely happy and very excited to be part of this effort. We are very passionate to our work and we really like to be part of an effort which promotes the development of space robotics for the future.

Giacomo said a big problem with space travel is that it is difficult to get big objects from Earth to space, so there is a great demand to have the ability to assemble objects in space.

During the demonstration, SPIDER will assemble multiple antenna reflector elements into one large antenna reflector, according to the release. This revolutionary process allows satellites, telescopes and other systems to use larger and more powerful components that might not fit into a standard rocket fairing when fully assembled.

This mission is very important for us to establish the data for this metric and allows us to increase the path and open the door to more important things to do, like building a base on the moon and moving toward Mars and doing everything that humans can accomplish, Marani said.

Building in space is something very important, Marani said, but also making sure that the work can be done with robotics because that is a far more efficient strategy. This mission, he said, moves space exploration one step closer toward having robotic systems being able to do the work humans currently do in space.

This is something very important, Marani said. The more we can trust the robots to do a job for us, the more this field will go well.

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WVU Robotic Technology Center to play crucial role in the future of in-space assembly - WBOY.com

Scientists Have Developed a Way to Make Human Skin More Protected from Space Radiation – Universe Today

Earth is a radiation cocoon. Inside that cocoon, the atmosphere and the magnetosphere keep us mostly safe from the Suns radiaition. Some ultraviolet light gets through, and can damage us. But reasonable precautions like simply minimizing exposure can keep the Suns radiation at bay.

But space is a different matter altogether. Among the many hazards it poses to astronauts, ever-present radiation is one that needs a solution.

Now a team of researchers have developed a new biomaterial to protect astronauts.

This new development is centered around melanins, pigments that are found in most living things on Earth, including animals like us. Melanins are responsible for red hair, for turning fruit brown, and for darkening skin after exposure to the Suns uv radiation. And its that last point thats crucial to this work.

The title of the new study is Selenomelanin: An Abiotic Selenium Analogue of Pheomelanin. Nathan Gianneschi, a Professor of Chemistryat Northwestern University, and associate director of the International Institute for Nanotechnology, led the research. Wei Cao from the Department of Chemistry at Northwestern is the papers first author. The study is published in the Journal of the American Chemical Society.

As ambitious space travel plans take astronauts further from Earth for longer periods of time, the astronauts face increased risks. Leaving Hollywood-style catastrophes aside, some of the hazards are chronic rather than acute. Just like here on Earth, protection from solar radiation over time is important.

Given the increased interest in space travel, and the general need for lightweight, multifunctional and radioprotective biomaterials, weve become excited about the potential of melanin.

But the risk in space is much greater. Once outside of Earths cocoon, astronauts are exposed to much more radiation. Not only from the Suns regular, steady output, but from solar flares, and even cosmic rays. Space is awash in dangerous ionizing radiation.

When astronauts spend time outside of Low Earth Orbit, they face greater risks from exposure to that radiation: cancer and other degenerative diseases, radiation sickness, and even central nervous effects, according to NASA. In fact, NASA says that astronauts can be exposed to doses of radiation ranging from 50 to 2,000 Milli-Sieverts (mSv). But even 1mSv is equivalent to approximately three chest x-rays, so its like astronauts are exposed to between 150 and 6000 chest x-rays. (Would you sign up for that?)

We could encase astronauts in leador put them behind lead shields like x-ray technicians in hospitalsand they would be protected. The problem is, how can astronauts perform all their duties, while still being protected from all the hazardous radiation?

Lead is also extremely heavy, and its impractical to launch lead into space for radiation shielding. Its unlikely that were going to be able to fly dedicated radiation-shielding mass, for missions like Artemis, said Kerry Lee of NASAs Johnsons Space Radiation Analysis Group, in a press release.

Thats what led to the interest in melanin.

Given the increased interest in space travel, and the general need for lightweight, multifunctional and radioprotective biomaterials, weve become excited about the potential of melanin, said lead researcher Nathan Gianneschi, in a press release. It occurred to our postdoctoral fellow Wei Cao that melanin containing selenium would offer better protection than other forms of melanin. That brought up the intriguing possibility that this as-yet undiscovered melanin may very well exist in nature, being used in this way. So we skipped the discovery part and decided to make it ourselves.

On Earth, when our skin is exposed to UV radiation, we produce more melanin. That darkens the skin, and the melanin pigmentation is effective at absorbing light. In fact, it can absorb up to 99.9% of UV radiation.

Researchers already know that melanin has potential to protect astronauts from radiation. A separate research team is experimenting with samples of it on the International Space Station, to see how it responds to the radiation there, which is not only UV radiation, but more energetic radiation like x-rays.

But there are different types of melanins. The one being tested on the ISS is actually a composite of fungal melanin and polymers. The lead researcher on that work is Radams J.B. Cordero from Johns Hopkins. The goal will be to take melanin and create biomaterials inspired by nature, Cordero explained. Were seeing if we can mimic biology and learn from biology to our benefit.

But this new research is going in a slightly different direction, by looking at melanin enriched with selenium. Selenium has an interesting relationship with light, and is used as a pigment, in glassmaking, in x-ray detectors, and in solar cells. Clearly, somethings up with selenium when it comes to radiation.

Previous research has shown that selenium compounds can protect animals from x-rays. So the team behind the new work wondered if combining melanin with selenium would yield a new way of protecting astronauts.

Rather than spend who knows how long trying to find the compound somewhere in nature, they decided to make their own compounds in a lab. They synthesized a new biomaterial that theyre calling selenomelanin. They treated cells with the new material, alongside cells treated with synthetic pheomelanin and eumelanin. They also used cells with no protective melanin as a control group.

Then came the radiation. They exposed all of the cells to a dose of radiation that would be lethal to a human. The result? Only the cell treated with their synthesized selenomelanin showed any normal cell cycles.

Our results demonstrated that selenomelanin offers superior protection from radiation, Gianneschi said. We also found that it was easier to synthesize selenomelanin than pheomelanin, and what we created was closer than synthetic pheomelanin to the melanin found in nature.

It gets better.

The team also found out that unlike the samples sent to the ISS by a separate research team, which are expensive to produce, this teams selenomelanin can be bio-synthesized. That means that live cells can produce it when fed the right nutrients. And the biosynthesized selenomelanin retains its protective properties.

With an abundant source of selenium in the environment, some organisms may have been able to adapt to extreme circumstances such radiation through the beneficial effects of selenomelanin, Gianneschi said.

Our work points to the possibility that melanin may act as a repository for selenium, helping ensure that organisms benefit from it, said Cao. Selenomelanin may play an important role in how selenium is metabolized and distributed biologically. Its an area for further investigation.

This discovery could lead to better protection for astronautsand radiation sensitive materialswhile in space. The team of researchers envisions a topical material like sun-screen, that can be applied to skin or materials for protection.

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The Memo: Airbnb travel up, a new business and more – Duluth News Tribune

Duluth's Cedar and Stone Nordic Sauna business used the pandemic to its advantage.

It initially started out as a community sauna business, where people would use the mobile, health-focused sauna for individual or group use.

As with many businesses, the pandemic disrupted this plan. So Cedar and Stone pivoted and ventured into sauna manufacturing for homes and cabins. It hired more staff and established a manufacturing facility in West Duluth.

The company's custom-designed, Nordic saunas built with high-quality, sustainable material is meeting an unmet need, a news release from the company said.

Customizations include increasing sauna space for customers with large families, adding outdoor showers or including smart technology so users can enable the sauna's stove remotely.

"Now revenue is up rather than down," the release said.

The Duluth Studio Market, which we covered back in February and checked in on in March, opened last week.

Owned by Stacey LaCoursiere, the artisan market sells curated items from fair trade companies and local artists. Merchandise includes pottery, jewelry, childrens gifts, illustrations and local apparel.

The space, located at 512 N. 45th Ave. E., also doubles as a photography studio for LaCoursiere's marketing business, Duluth Studio Co., which offers commercial photography, videography and design services.

LaCoursiere's initial plan was to open in late spring but that was pre-pandemic. Back in March, she told the News Tribune that rolling with the punches is "what you have to do as an entrepreneur."

She's certainly rolled with the punches, and opened the business last week.

Northern Minnesota was one of the nation's "top trending destinations" over the Fourth of July weekend.

Airbnb hosts in the area saw a 50% increase in income compared to the same holiday weekend last year, according to Airbnb.

In addition to northern Minnesota, rural areas, in general, were also popular destinations for holiday travelers.

Rural hosts in the U.S. earned more than $200 million in June an increase of over 25% compared to the same time last year.

We all know what's influencing these figures: COVID-19.

To Airbnb, the weekend's outcome shows that people are itching to travel, but don't want to go to great extents to do so.

Kelly Busche covers business and health for the News Tribune. She wants to hear from people currently on unemployment, especially as we near the end of the additional $600 in unemployment benefits that runs out later this month. Drop her a line at kbusche@duluthnews.com.

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The Memo: Airbnb travel up, a new business and more - Duluth News Tribune

Cyclists should claim their space on the road to travel safely – The Courier

The idiom Its as easy as riding a bike is often thrown about when something is seen as easy to master, except the problem is that riding a bike isnt as easy as the phrase may lead you to believe.

Of course, straddling a bike, pushing off and keeping your balance is fairly straightforward if all you want to do is cycle in a straight line.

For many aspects of cycling, mountain biking for example, practice is the road to perfection, or in my case the road to fewer incidents of embarrassing myself as I launch myself over the handlebars.

But if you are cycling on the road, then you dont have the luxury of gradual learning. To cycle safely on the road, you need to be confident in many different abilities, such as being able to cycle one-handed as you signal, or look over your shoulder and maintain a straight line; and all this with other road users around you.

It is ideal that you first practise these skills in a safe environment, but when you head out on the road, confident with your ability, it is easy to be suddenly intimidated by the other vehicles around you. This can knock your confidence and mean that riders end up feeling forced to cycle on the pavement, or may even put their bike away for good.

Defensive cycling is a term that is often used in road cycle training. Essentially, it is a way of training cyclists to become confident road users by showing them skills to prevent others on the road from taking advantage of their relatively small size and slow speed.

One cycle trainer once told me: You dont have to expect the worst to happen to prepare for it and this is what defensive cycling is all about: giving the rider the tools and knowledge that will allow them to react more quickly should they feel at risk. It is about expecting the unexpected.

One thing I always tell my trainees is that their eyes and ears are the most important things they use when riding their bike. They should be constantly alert when riding, as often other road users will not be so alert.

When I drive my car, I am always super aware of cyclists around me and often observe their actions and reactions.

I can always tell the cyclists who arent so confident cycling with traffic around them they shrink into the side of the road, letting traffic intimidate them even more and boxing themselves into a dangerous situation.

As a cyclist you should give yourself space other road users wont give it to you, so you need to claim it.

Space is your best friend. It will offer you that last-minute escape route; it will keep you away from that car door that just opened and it will give you room to avoid that deep pot-hole that lies ahead of you.

Giving yourself space will also allow you to become part of the flow of traffic and, despite what some may think as you cycle along a busy road, it will be you on the bike that is moving forward faster.

Riding defensively does not mean being angry at other road users; on the contrary giving other drivers a smile will move you from the position of being a cyclist to being a human being on a bike.

I use this tactic a lot when I am stopped at traffic lights to let the driver in the car behind know I know they are there. It also gives me the chance to see if they are distracted and texting on their phone, in which case I know to be aware when the lights change to green.

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Cyclists should claim their space on the road to travel safely - The Courier

Blast off to Mars in this stellar new exhibit at a Texas science museum – culturemap.com

Given the state of the world in 2020, one couldnt be blamed for fantasizing about life on another planet. Fortunately, a new exhibit debuting in Texas will jet locals out of this world to the fourth planet from the sun without having to deal with weird suits, space travel, or Elon Musk.

The new, stellar exhibit at the Houston Museum of Natural Science, dubbedMars by Luke Jerram, will transport viewers to the Red Planet via a 23-foot, internally lit globe of Mars suspended above their heads. Mars opened on July 1 and runs through October 7.

The exhibit centers on Martian topographic features and details the history of Mars exploration with rovers and landers, according to a press release. Guests will also learn about scientists search for water (and life) on the Red Planet and the future of human exploration of the planet.

"Mars" boasts 120dpi detailed NASA imagery of the Martian surface compiled from Mars Reconnaissance Orbiter data. The sculpture lets viewers see our neighboring planet in exquisite detail, floating in three dimensions. At an approximate scale of 1:1 million, each centimeter of the internally lit spherical sculpture represents 10 kilometers of the Martian surface.

British artist Luke Jerram is no stranger to the Houston museum, as it also has showcased his similar "Moon" and "Earth" floating sculptures. Almost harking to the movieThe Martian, this exhibition will also feature a living Martian garden, showcasing plants growing side-by-side in Earth and Martian soil.

Our Mars Farmers show the successes and failures of Earth plants growing in simulated Mars soil, said vice president of astronomy at HMNS and exhibit curator Carolyn Sumners in a statement. We already have our first Mars tomato! (Eat your heart out, Matt Damon.)

Guests can also spot distinctive Martian features, like craters, canyons, and rover landing sites, and learn about the future of space exploration. The artwork transports viewers to this desert wasteland, to imagine what life is like on a planet with blue sunsets.

Landers and rovers have made Mars a real world with hills, valleys, volcanoes, and weather, Summers noted. We can imagine living there.

And given this crazy year, that doesnt sound so bad.

---Mars by Luke Jerram runs July 1 through October 7 at the Houston Museum of Natural Science; 5555 Hermann Park Dr., Houston. For tickets and more information, visit the museum online.

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Blast off to Mars in this stellar new exhibit at a Texas science museum - culturemap.com

Why The War of the Worlds producer George Pal was the Spielberg of his time – SYFY WIRE

Last week, the consistently remarkable Criterion Collection brought us the first-ever Blu-ray release of the 1953 sci-fi classic The War of the Worlds. The film, based on the 1898 novel by the great H.G. Wells, has been remade several times since, but this first version set a high standard for the others that came in its wake. While director Byron Haskin did an admirable job bringing the Martian invaders to life, the unsung hero of the film (alongside the common cold, of course) might be producer George Pal one of the pioneers of filmed science fiction as we know it.

"George is considered the father of sci-fi films," says Bob Burns in The Sky Is Falling, the making-of documentary included in the Criterion package. "And he pretty much is, because he was the first one to really do sci-fi films that had that name.

According to an illustrated essay by critic J. Hoberman also included with the Blu-ray, Pal started his career as a designer and animator in the Hungarian film industry. Pal, born Gyrgy Pl Marczincsak in Hungary in 1908, first worked during the 1930s in Berlin, Prague, Paris, and Holland, where he perfected his style of puppet animation in both shorts and advertisements. Pal was lured to Hollywood in 1939, where he created more than 40 animated shorts for Paramount Pictures, known as "Puppetoons."

His first feature as a producer, The Great Rupert, reportedly featured an animated squirrel so lifelike that some viewers were convinced it was a trained animal. But it was Pal's second film, 1950's Destination Moon (directed by Irving Pichel), that changed the course of his career and possibly that of sci-fi cinema.

Based loosely on a novel by legendary sci-fi author Robert A. Heinlein (who also worked on the screenplay), the film was the first major genre picture produced in the U.S. that addressed the nuts and bolts of space travel in serious fashion.

"If you believe in (your concept), really, you make a better picture," says Pal in an audio recording included on the Blu-ray of a seminar he gave at the American Film Institute (AFI) in 1970. "Because it shows the sincerity. In other words, you don't fluff it up or go, 'Oh, what the hell, the public doesn't know this or that.' That's not so. The audience feels if you're sincere in your effort."

Although it certainly may seem dated and stodgy now noted critic John Baxter called it "rather dull viewing" just 20 years later in his book Science Fiction in the Cinema Destination Moon represented an important step forward for filmed science fiction overall.

It was an important step forward for Pal as well, whose next film as producer, When Worlds Collide, came out just a year later. Based on the 1933 novel by Philip Wylie and Edwin Balmer, it revolved around efforts to build a "space ark" on which selected representatives of humanity can escape an oncoming cataclysmic collision between Earth and a "rogue star" called Bellus by landing on Bellus' sole planet, Zyra.

While Destination Moon at least attempted scientific accuracy, Pal threw all that out the window with When Worlds Collide and focused on sheer spectacle. The film, directed by Rudolph Mate, is best remembered for scenes of massive devastation that pre-dated later epics like Independence Day and Deep Impact by decades.

When Worlds Collide cost nearly $1 million to make in 1951 dollars (equivalent to roughly $10 million today still a bargain!) and, like Destination Moon, won the Academy Award for Best Special Effects, paving the way for Pal's next and almost certainly greatest sci-fi achievement with The War of the Worlds.

"So many writers and producers tried to make it, but they couldn't lick the script," says Pal in the AFI seminar. "Nobody was thinking of the simplest thing, which is really to follow the book as closely as you possibly can. I came over to Paramount, found it in the files, and thought, 'This is wonderful, War of the Worlds is a great story.'"

The latter in turn hired director Byron Haskin, whose knowledge of special effects, according to John Brosnan in his book Future Tense, made Haskin an "apt choice" to direct a film as complex as The War of the Worlds. Haskin would work with Pal twice more, while also later directing Robinson Crusoe on Mars and several classic episodes of the 1960s TV series The Outer Limits, including the show's masterpiece, "Demon With a Glass Hand."

Even though The War of the Worlds had a relatively robust budget of $2 million, Pal, Haskin, and screenwriter Barre Lyndon made accommodations to keep the movie financially feasible. The first was updating the story from Wells' Victorian England to modern-day Southern California. "With all the talk about flying saucers, War of the Worlds had become especially timely," Pal told Cinefantastique in 1977. "And that was one of the reasons we updated the story."

The second was changing Wells' Martian war machines from walking tripods to vessels shaped like manta rays, with long necks and snake-like heads that blast out the Martian death rays (although the machines are visibly supported by three energy beams that touch the ground below, which still make them tripods in a way).

A third decision was casting the movie with mostly unknowns. Lead scientist Clayton Forrester was played by stage and TV actor Gene Barry in only his second big-screen appearance. "George Pal produced wonderfully strange, different kinds of movies," says Barry in The Sky Is Falling, recalling his appearance in what was then a massive production. "Movies that had physical accomplishments in them that had to be done, and he did them. He made them happen. Magic. He brought a magic to the screen."

Indeed he did. Even for a film made 67 years ago, The War of the Worlds works as an all-out, often terrifying spectacle. Cities are obliterated, the military is vanquished, and the Martian death machines run rampant over the countryside. Just as Wells' book was one of the first to detail afull-scale invasion from another world, Pal and Haskin's film effectively brought home the sheer horror of what that might look like. According to Hoberman, Haskin said, "I wanted to stress the total helplessness of humanity."

The War of the Worlds established Pal as one of the great showmen of his era and a major filmmaker in the realm of science fiction. The movie, the third Pal film to win an Oscar for Best Special Effects, reflected the atomic fears of the Cold War era and mostly holds up. There probably hasn't been an alien invasion film since that doesn't owe something to this genuinely harrowing classic, from Independence Day to Edge of Tomorrow to Steven Spielberg's own, even darker version of the same story in 2005.

Pal would continue to make sci-fi and fantasy films after The War of the Worlds, although his 1955 follow-up to Destination Moon, The Conquest of Space, was a pricey flop. He also began to direct pictures himself, starting with 1958's musical fantasy, Tom Thumb, and in 1960 returned to H.G. Wells for what might be considered his second great film, The Time Machine.

"H.G. Wells' ideas were always very, very good for motion pictures," recalled Pal, who said he got the rights to The Time Machine after the Wells estate saw The War of the Worlds and approved of it. "I wish he was alive today because I think he would make a wonderful screenplay writer."

Somewhat more faithful to the book than The War of the Worlds, The Time Machine featured another Oscar-winning slate of innovative visual effects, while its combination of time travel with the period setting of the late 19th century could be viewed as the precursor to steampunk. It portrayed the far future in a way that had not been seen before on the screen, and the movie's blend of action and mind-bending ideas is echoed in many of today's films.

Pal delved back into fantasy for his next three films Atlantis, the Lost Continent (1961), The Wonderful World of the Brothers Grimm (1962), and 7 Faces of Dr. Lao (1964) but only the second film generated box-office results. His final sci-fi outing, 1968's The Power, reteamed Pal with director Byron Haskin for a trippy, cerebral story about a research team who learn that one of their members is a mutant with enhanced mental powers.

Although The Power has gained a small cult following over the years, that and Pal's last film, 1975's Doc Savage: The Man of Bronze based on the pulp adventure hero of the 1930s and '40s were not widely seen by audiences. While he tried to develop other projects like an abandoned adaptation of Logan's Run in the late 1960s and a sequel to When Worlds Collide he did not produce another finished film before his death in 1980.

Nevertheless, Pal's place would be secure in the history of sci-fi cinema even if he had only produced The War of the Worlds. But that, combined with other successes like When Worlds Collide and The Time Machine, not to mention the vision and imagination he brought to all his pictures, makes him an important figure in the genre's ongoing evolution.

"It was the Atomic Age, and (Pal) had always had an interest in fantasy and fairies and gnomes and creatures of the woods, but now he transposed them to a new genre," says visual effects artist Robert Skotak in The Sky Is Falling. "He made good films about these popular subjects, and for a while there he was kind of what George Lucas and Steven Spielberg and James Cameron are to later generations."

The War of the Worlds, which has been restored with a stunning 4K visual presentation, accompanied by its original mono soundtrack and a brand-new 5.1 surround track created by legendary Star Wars sound designer Ben Burtt, is out now on Blu-ray from the Criterion Collection.

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Why The War of the Worlds producer George Pal was the Spielberg of his time - SYFY WIRE

Iris, the mini space rover thats been tasked with a big job – The South African

The task of exploring other worlds in space is a big and challenging job. But it seems that you dont need to be big in size to take on the task.

A new lunar rover tasked with helping NASA to prepare for its next series of manned spaceflights by scouting the surface of the moon will, remarkably, be no bigger than a shoebox.

It will also weighs just a little over 2kg. To put that into perspective, it tips the scales at less than some Chihuahua dogs.

The rover, called Iris, will launch next year and once it arrives on the moon it will drive over the rocky and dusty surface for just under 50m, in other words about half the length of a soccer field.

Its aim is to give engineers back on Earth more information about how best to travel over the moons surface in future.

The drive will take the rover far enough away from its landing site to study how the landing itself alters the surface of the moon.

Feedback from Apollo astronauts who were on the moons surface in the 1960s and 70s is that the all-encompassing dust and debris makes it difficult to operate there and the potential for damage to sensitive equipment is ever-present.

At the semi-permanent lunar outposts that will be set up in the future, sandblasting as a result of take-offs and landings could cause catastrophic damage.

So Iris needs to help engineers find answers before the next manned flights to the moon, which are scheduled to take place in 2024 as part of NASAs Artemis programme. This will put astronauts back on the lunar surface and develop an ongoing presence there.

The Artemis programme is a renaming of several earlier activities NASA was already undertaking to return humans to the moon. These were mandated by President Trumps Space Policy Directive 1, which tasked the agency with focusing on missions to the moon. Earlier this year, Vice President Mike Pence set an ambitious deadline to land humans at the lunar south pole by 2024, explains the website Space.com.

According to Space.com, Iris and is the first of a new, small and simple design called CubeRovers. The name is a nod to CubeSats, which NASA says are a class of nanosatellites (tiny satellites) that use a standard size and form.

CubeSats now provide a cost effective platform for science investigations, new technology demonstrations and advanced mission concepts, the space agency notes on its website.

For such a tiny rover, Iris has a big mission to lead America back to the moon, and Im so proud to lead this team of passionate students who are paving the way for future planetary robotic exploration, Raewyn Duvall, Deputy Program Manager for Iris and a doctoral student at Carnegie Mellon University, said in a statement. Were all excited for Iriss launch, to drive a rover on the lunar surface, and to see what we can discover!

This content has been created as part of our freelancer relief programme. We are supporting journalists and freelance writers impacted by the economic slowdown caused by #lockdownlife.

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Iris, the mini space rover thats been tasked with a big job - The South African

From floating guts to ‘sticky’ blood here’s how to do surgery in space – The Next Web

Earlier this year, it was reported that an astronaut in space had developed a potentially life-threatening blood clot in the neck. This was successfully treated with medication by doctors on Earth, avoiding surgery. But given that space agencies and private spaceflight companies have committed to landing humans on Mars in the coming decades, we may not be so lucky next time.

Surgical emergencies are in fact one of the main challenges when it comes to human space travel. But over the last few years, space medicine researchers have come up with a number of ideas that could help, from surgical robots to 3D printers.

Mars is a whopping 54.6 million kilometers (33.9 million miles) away from Earth, when closest. In comparison, the International Space Agency (ISS) orbits just 400 kilometers above Earth. For surgical emergencies on the ISS, the procedure is to stabilize the patient and transport them back to Earth, aided by telecommunication in real time. This wont work on Mars missions, where evacuation would take months or years, and there may be a latency in communications of over twenty minutes.

As well as distance, the extreme environment faced during transit to and on Mars includes microgravity, high radiation levels and an enclosed pressurized cabin or suit. This is tough on astronauts bodies and takes time getting used to.

We already know that space travel changes astronauts cells, blood pressure regulation and heart performance. It also affects the bodys fluid distribution and weakens its bones and muscles. Space travelers may also more easily develop infections. So in terms of fitness for surgery, an injured or unwell astronaut will be already at a physiological disadvantage.

Astronaut Chris Hadfield using a cardio lab at the ISS. NASA

But how likely is it that an astronaut will actually need surgery? For a crew of seven people, researchers estimate that there will be an average of one surgical emergency every 2.4 years during a Mars mission. The main causes include injury, appendicitis, gallbladder inflammation or cancer. Astronauts are screened extensively when they are selected, but surgical emergencies can occur in healthy people and may be exacerbated in the extreme environment of space.

Surgery in microgravity is possible and has already been been carried out, albeit not on humans yet. For example, astronauts have managed to repair rat tails and perform laroscopy a minimally invasive surgical procedure used to examine and repair the organs inside the abdomen on animals, while in microgravity.

These surgeries have led to new innovations and improvements such as magnetizing surgical tools so they stick to the table, and restraining the surgeonaut too.

One problem was that, during open surgery, the intestines would float around, obscuring view of the surgical field. To deal with this, space travelers should opt for minimally invasive surgical techniques, such as keyhole surgery, ideally occurring within patients internal cavities through small incisions using a camera and instruments.

A laroscopy was recently carried out on fake abdomens during a parabolic zero gravity flight, with surgeons successfully stemming traumatic bleeding. But they warned that it would be psychologically hard to carry out such a procedure on a crew mate.

Bodily fluids will also behave differently in space and on Mars. The blood in our veins may stick to instruments because of surface tension. Floating droplets may also form streams that could restrict the surgeons view, which is not ideal. The circulating air of an enclosed cabin may also be an infection risk. Surgical bubbles and blood-repelling surgical tools could be the solution.

Researchers have already developed and tested various surgical enclosures in microgravity environments. For example, NASA evaluated a closed system comprising a surgical clear plastic overhead canopy with arm ports, aiming to prevent contamination.

When orbiting or settled on Mars, however, we would ideally need a hypothetical traumapod, with radiation shielding, surgical robots, advanced life support and restraints. This would be a dedicated module with filtered air supply and a computer to aid in diagnosis and treatment.

The surgeries carried out in space so far have revealed that a large amount of support equipment is essential. This is a luxury the crew may not have on a virgin voyage to Mars. You cannot take much equipment on a rocket. It has therefore been suggested that a 3D printer could use materials from Mars itself to develop surgical tools.

Tools that have been 3D printed have been successfully tested by crew with no prior surgical experience, performing a task similar to surgery simply by cutting and suturing materials (rather than a body). There was no substantial difference in time to completion with 3D printed instruments such as towel clamps, scalpel handles and toothed forceps.

A Mars settlement would need a traumapod. NASA

Robotic surgery is another option that has been used routinely on Earth, and tested for planetary excursions. During NEEMO 7, a series of missions in the underwater habitat Aquarius in Florida Keys by NASA, surgery by a robot controlled from another lab was successfully used to remove a fake gallbladder and kidney stone from a fake body. However, the lag in communications in space will make remote control a problem. Ideally, surgical robots would need to be autonomous.

There is a wealth of research and preparation for the possible event of a surgical emergency during a Mars mission, but there are many unknowns, especially when it comes to diagnostics and anesthesia. Ultimately, prevention is better than surgery. So selecting healthy crew and developing the engineering solutions needed to protect them will be crucial.

This article is republished from The ConversationbyNina Louise Purvis, Postgraduate Researcher in Space Medicine, Kings College Londonunder a Creative Commons license. Read the original article.

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From floating guts to 'sticky' blood here's how to do surgery in space - The Next Web

I worked for a decade at NASA and I can tell you the ‘Mars bros’ have it all wrong – The Independent

NASA is scheduled to launch another rover to Mars on July 20.

Yawn.

Sharing the full story, not just the headlines

During the decade I worked at NASA, my job involved touring the Space Shuttle trainer, exploring experimental extraterrestrial habitats, holding meteorites and donning a bunny suit for the clean room, where satellites were built. My friends nicknamed me The Astronaut.

Youd be perfect, they said, knowing I was athletic and daring in my role as senior science editor. Just fill out the astronaut application. I knew my oceanography background qualified me, but I couldnt get past the idea of spending six months trapped in a smelly enclosure while eating freeze-dried lasagna, bathing with a washcloth and breathing recirculated air. Besides, I cared about Earth, not space.

At the Jet Propulsion Laboratory (JPL) in Southern California, where I was based, those who worked on Mars science and those who worked on Earth science competed for attention and praise from management. During regular meetings, Mars People sat in the choice seats nearest the director, who saw Mars as exciting and prestigious and treated the Earth People like stepchildren. A Mars rover cost $2.5 billion, whereas an Earth orbiting satellite was around $400 million. Mars People snubbed Earth People.

I remember when the Deputy Director of Communication lectured me on space exploration as the only way for humanity to move forward. I glanced around his office at the stacks of paper piled across his desk, while he executed his duty to school me on all things NASA. He explained with great confidence how the success of humankind was the result of an innate drive to go and explore, and how the pioneering spirit was integral to human nature. His opinions echoed those of Neil deGrasse Tyson, with whom Id once argued. Tyson and I spent an hour going at it so intensely that I ended up apologizing for accidentally spitting on him. Go ahead and lean in, he told me. Im a New Yorker; I can handle it.

Both Tyson and the NASA director claimed that sending humans to Mars was the best way to excite people about science. They painted a romanticized ideal, with charismatic explorers sailing forth toward wonder and travel and discovery. But to me, exploration represented machismo and pillaging and conquest. In school, we were taught to regard imperialistic conquerors as heroes, even though each journey to discovery was mired in colonial exploitation driven by expansionism. Excerpts from diaries and letters written by Christopher Columbus included descriptions of genocide, slavery and rape. The British explorer, James Cook, committed massacres and kidnapped Native people. Such atrocities were not humanity.

These space enthusiasts also claimed that during NASAs Apollo Program (1963-1972), the American public was more scientifically literate, which was a talking point supporting space flight to Mars. But there was no empirical evidence for the assertion that human or robotic space-travel increased public interest in science. Science literacy among US adults hasnt changed for decades. So why would dredging it up again move society now? If space travel were so inspirational, then more people would be able to name astronauts other than Buzz Aldrin or Neil Armstrong. They cant.

True, many Americans have an abysmal understanding of how the world works. According to the Pew Research Center, 33 percent of Americans reject the concept of evolution and believe the Earth is less than 10,000 years old. This lack of awareness about how science impacts politics, policy and our future is a problem with economic and civic consequences. We live on this planet together, so our collective actions impact each other as well as other species. Every apathetic citizen or hostile denier represents a gamble on everyone elses future.

The coronavirus started as an ecological pandemic. It spread quickly because of globalization and public misunderstanding of, and distrust in, science. Instead of trips to Mars, we could focus attention on Earth and clean up the mess here before exploring new horizons.

During the 13 years I taught college-level oceanography, my students told me they believed science was cold and difficult to understand. But these young people were keen to learn about Earths climate and get involved. I convinced them that literacy involved connections they made to the world, not facts to memorize.

After Trump took office, I was called into JPL Ethics and told that climate change was a sensitive topic, and that my work was being monitored. By September 2017, Id been censored, intimidated by Media Relations, stripped of my duties and barred from speaking to the press. My manager suggested I write something about Mars.

I knew NASA administrators cared about Mars. Neil deGrasse Tyson cared about Mars. But I didnt, and neither did many of my friends and neighbors. My responsibility to be honest about climate change outweighed my responsibility to protect NASA. I refused to stay quiet. By October, I was forced out.

Was it worth it? Yes. Our generations ambitious project, our moonshot, isnt space travel. Its the climate crisis, plastic pollution and public health.

Our scientific talents should be focused here. On Earth.

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I worked for a decade at NASA and I can tell you the 'Mars bros' have it all wrong - The Independent

Fast 9 star might have revealed that the movie goes to space – Digital Spy

Fast & Furious 9 star Ludacris has potentially given away that the franchise is about to head into space.

The idea that space was the final frontier for the Fast franchise has been a long-running joke, but given how outlandish the series has become, we wouldn't be too surprised.

Appearing on Sirius XM's The Jess Cagle Show, Ludacris explained how the delay on the release of Fast 9 has given the creative minds behind the franchise more time to make the film (and possible sequels) some of the best of all time.

Prince Williams / ContributorGetty Images

Co-host Julia Cunningham then said: "I don't even know creatively what they could come up with to wow us even though I know they do every time.

"I'm like, space has to be involved, submarines, I don't even know. In my mind I can't imagine what happens in the next movie."

Ludacris responded: "You just said something very important. I will say that you are very intuitive, cause you said something right, but I'm not going to give it away."

"It was space I said space," Julia then shouted, to which the rapper simply put his hand over his mouth, so as not to say anything more.

Related: Vin Diesel hints there's a "big surprise" coming for Fast & Furious 9

Obviously, this could all be a big wind up, but we're actually kind of excited about the possibility of seeing the gang potentially hop in a spaceship.

Last year, Fast & Furious screenwriter Chris Morgan admitted that "nothings out of the question" when asked whether we could see Dominic Toretto and the gang travel to space one day.

"It just has to be cool and it has to be good," he explained in an interview with Polygon. "You know, thats the thing. I would say nothing is off-limits as long as we can stay on the right side of keeping the audience engaged."

Fast & Furious 9 will be released in April 2021.

Fast & Furious 8-Film Collection DVD (1-8 Box Set) [2017]

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Fast & Furious 8 (Amazon Prime)

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Fast & Furious 7 [Blu-ray] [2017] [Region Free]

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Fast & Furious 6 (Limited Edition Steelbook) [Blu-ray] [2013] [Region Free]

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Fast & Furious 1-6 (includes sneak peek of Fast & Furious 7) [Blu-ray] [2015]

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Fast & Furious 5 [DVD] [2011]

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Fast & Furious 1-8 (4K + Blu-ray) [2019] [Region Free]

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Fast 9 star might have revealed that the movie goes to space - Digital Spy

Stocks making the biggest moves after hours: Virgin Galactic, Redfin, Carnival and more – CNBC

A Redfin Corp. 'For Sale' sign stands outside of a home in Seattle, Washington.

David Ryder | Bloomberg | Getty Images

Check out the companies making headlines after the bell:

Marathon Oil The oil company's stock climbed 1% in extended trading after falling 7.05% earlier Thursday. Oil dropped 3%during the day amid concerns over rising coronavirus case counts.

Redfin Shares of the real estate brokerage fell 2% after the closing bell. The company's stock hit an all-time high earlier in the week as real estate recovers from pandemic-forced lockdowns across the country. The pandemic is causing an exodus from cities and home searches are now increasingly in the suburbs, Ryan Schneider, chief executive ofRealogy Holdings, told CNBC Thursday.

Virgin GalacticShares of the space travel company rose 1% in extended trading after the stock jumped nearly 16% earlier in the day. Last week, Virgin Galactic said it expects to attain its Federal Aviation Administration license within the next two spaceflights, which would bring the company closer to flying customers.

Bed Bath & Beyond Shares of thehome goods retailer climbed 1% in extended trading after falling 24.5% in regular hours. Bed Bath & Beyond released its first-quarter financial results Wednesday and said it will close about 200 stores over the next two years.

NIO The Chinese electric-car maker's stock rose 2% after the market closed. Shares jumped 13% during the day, continuing an upward trend for the stock. Last week Nio reported a monthly record of 3,740 vehicle deliveries for June and said it delivered 10,331 vehicles in the second quarter.

Carnival The cruise operator's stock climbed 1% in extended trading. Earlier Thursday, Carnival's subsidiary AIDA Cruises announced it would restart vacation trips in August.

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Stocks making the biggest moves after hours: Virgin Galactic, Redfin, Carnival and more - CNBC

An End to Empty Seats on Canadas Airlines – The New York Times

Photos of empty airports have come to symbolize the head-spinning drop in air travel during the pandemic. But the more surprising illustration for me involves a now-crowded space.

The parking lots of rental car agencies near the Ottawa airport are now overstuffed with unwanted cars. So many of them have piled up since air travel has fallen by 90 percent in Canada that the unwanted rentals have overflowed into the vast parking lot of a nearby convention center.

Recently, Canadas two major airlines, Air Canada and WestJet, have been pushing to get more people back on their planes, urging politicians to substantially ease virus-related restrictions, including expanding border travel with the United States, as they move to restart additional routes later this month.

This is hundreds of times worse than 9/11, SARS, or the global financial crisis quite frankly combined, Calin Rovinescu, the chief executive of Air Canada, told the Financial Post in an interview.

But at the same time that Mr. Rovinescu and his counterparts are working to get more people back in the air, theyve made one change that gives some health officials pause.

On Canada Day, both Air Canada and WestJet ended what the industry calls seat blocking, leaving a vacant seat between passengers. Though that gap was far short of the minimum recommended distance of 2 meters, it was still a gap.

So while health officials are urging Canadians to keep their distance as various measures are eased, airlines are putting them in close contact in an enclosed space for flights that can last hours.

During recent testimony before the House of Commons health committee, officials from all of Canadas major airlines played down the need to keep passengers apart and emphasized what they called a cascading or multilayered approach to making sure infections dont spread aboard flights. That approach, they repeatedly said, includes taking into account the quality of the air filtration systems on planes.

In an email, Air Canada explained the end of seat blocking to me this way: While we would all like a single measure that reduces risk, we are left to use a combination of approaches to mitigate risk as far as practical.

It added: It is very important that people understand how efficiently aircraft ventilation works to refresh air regularly onboard every 2 to 3 minutes, which is a key reason there has been no reports of disease outbreak clusters onboard flights.

But scientists, public health authorities and physicians seem less enthusiastic about a return to jampacked cabins and, for that matter, about moving large numbers of people around the country.

From a public health perspective the physical distancing is one of the key public health measures, Dr. Howard Njoo, the deputy chief public health officer of Canada, said at a news conference when asked about the airlines new plan. Physical distancing is our recommendation.

Dr. David N. Fisman, an epidemiologist at the University of Torontos Dalla Lana School of Public Health, agreed that having multiple measures can lead to greater overall control of infections and he added that hes been surprised by the lack of outbreaks clustered around flights.

That said, at the end of the day, proximity and crowding are important factors in facilitating disease transmission, so maintaining as much space as possible between individuals and requiring masks when space cant be maintained seems quite common-sensical to me, he said. I cant imagine that airplanes have some magical property that makes droplet borne transmission difficult if people are packed closely together.

Dr. Cory Neudorf a professor at the University of Saskatchewans medical school and the medical director for health surveillance at Saskatchewan Health Authority, told me in an email that viruses can still pass between passengers even with the most vigorous filtration.

Airplanes try to mitigate this through frequent air circulation and use of HEPA filters, but yes, you can still be infected if you breathe in the particles on their way to the filters, he wrote in the email.

He added that limiting the number of people aboard planes cuts the risk of transmission in other ways.

Fewer people in a given shared space means fewer people touching shared surfaces, so risk is reduced, especially if you dont have someone using the same arm rest or other surfaces as they walk down aisles, use the washroom etc., he wrote.

Air Canada will allow economy class passengers on flights that are nearly full to rebook at no cost. That, of course, assumes travel flexibility and the availability of flights with lots of empty seats.

Moris Moreno recently produced a record for The Times of air travel from Seattle to Boston with his family, although the middle seats were empty when he took to the skies.

Balarama Holness is a Montreal educator, broadcaster, law student, former professional Canadian football player, and one of the leaders of Canadas current Black rights and anti-racism movement. He told Dan Bilefsky he aspires to be a Canadian Obama.

Justin Trudeau is at the center of another conflict-of-interest investigation his third since he became Prime Minister in 2015. This one is over his familys connections to the international WE Charity, which his government had awarded a no-bid contract to disburse hundreds of millions of dollars in aid to student volunteers. This week, it was revealed that Mr. Trudeaus mother and brother were paid more than 280,000 Canadian dollars over four years by the charity for speaking at its events.

For those feeling stir-crazy under coronavirus travel restrictions, you can travel virtually along the 360-mile Tshiuetin railroad in rural Quebec, from Sept-les to Schefferville. Partly owned and wholly operated by the three First Nations that it connects, the line is a symbol of reclamation and defiance for those it serves, writes Chlo Ellingson. Her photos are wonderful.

A native of Windsor, Ontario, Ian Austen was educated in Toronto, lives in Ottawa and has reported about Canada for The New York Times for the past 16 years. Follow him on Twitter at @ianrausten.

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An End to Empty Seats on Canadas Airlines - The New York Times