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NASA will send its lunar rover to find water on the Moon in 2023 – Techstory
Posted: September 8, 2021 at 10:03 am
Source: CNET
Water is one of the most valuable resources when it comes to survival and in order to find a permanent human presence on the Moon, water is one of the most important resources. Humans need water to drink, to wash, to bathe, and everything that we do here on Earth. This mission is very crucial for NASA as it plans to make exoplanetary colonization a reality. The Artemis program is NASAs effort to find a permanent human presence on the Moon, as noted in a report by Engadget which simply means that we could soon be living on the Moon but that plan is way ahead in the future and this mission by NASA is very crucial in taking that first step.
NASAs scientists and researchers are planning to send the first lunar rover on Moons South Pole in search of water i.e., dihydrogen-monoxide deposits. Humans already know that there is a lot of water on the moon, especially in its north and south poles but it isnt in liquid form, as we already expect. Thus, this mission is set out to find water in different states of matter with hydrogen molecules as the most crucial element.
NASA has previously conducted multiple missions on the Moon including SOFIA, Prospector, LCROSS, and articulating the combined knowledge from these missions, scientists know that there are millions of gallons of water on the Moons surface combined with regolith which is the Moons soil or Moondust.
Now, scientists know that there is water on the Moon but are not sure about the distribution of water on the Moons surface, the form in which water will be available, and where exactly to look for water and this is why NASA is conducting its VIPER Mission (Volatiles Investigating Polar Exploration Rover) which is set course for 2023.
The VIPER, as it scouts over the Moons South Pole will use its NSS technology which is the Neutron Spectrometer System that will survey the regolith on the Moon in search for water molecules at depths up to 0.9 meters by considering and analyzing the energy losses at the molecular level, in cosmic rays that occur when hydrogen molecules strike, as mentioned in a report by Engadget. We already know one thing for sure, where there is hydrogen, there is water.
Anyhow, the VIPER Mission will not be NASAs first mission on the Moon, but it will be the organizations first autonomous mission on the Moon. As Engadget notes, the Moon has no atmosphere which makes the weather conditions extreme on the surface. If it is hot, it is too hot, and of if it is cold, it is too cold, and preparing the Lunar Rovers for such extreme conditions is a task for NASA.
Another challenge is regolith, the Moons electrostatically charged soil that can either pile up to be a mountain for NASAs VIPER or bury the rover deep into the surface. NASA notes that in order to prepare its lunar rover for the same, the team has programmed it to swim.
VIPER is being prepared for any extreme conditions that the rover might face on the Moon. NASA has confirmed that VIPER will not be running blind on the Moons surface and the space research organization is working on the production of a lunar road map that will ensure to guide the rover all the way up to the South pole. As mentioned in a report by Engadget, NASA is said to use its open-source Stereo Pipeline software tool along with its Pleiades supercomputer to assemble all the images taken by the Lunar Reconnaissance Orbiter using photoclinometry. The use of these technologies combined will help the VIPER to avoid pitfalls and other challenges such as craters on the lunar surface.
Furthermore, the VIPER is said to be installed with NASAs rocker-bogie suspension system. It will be powered with solar energy and will be able to move in any direction at any point in time, independent of where the rover is pointed at. Each of the four wheels of the VIPER lunar rover will have the capability to be steered independently.
This mission is fairly crucial for NASA as it will allow the scientists to study the Moons surface primarily to find water but much more. The study of Moondust a.k.a. regolith will be very significant in this mission. The VIPER Mission could be mans first step towards finding exoplanetary colonization and could be a major contributor to NASAs Artemis Mission.
What do you think, can humans imagine a life on the Moon? I think it can be a possibility in the future but not anytime soon, there is a lot more to know about our natural satellite before we can go live on it.
In another mission, NASA is also planning to launch a rocket on the Moon to bring back Moondust to Earth in order to test the soils endurance and capabilities, if it can be used for construction purposes. NASA is working tirelessly to bring the future to us and very soon, we could be living and colonizing Mars, the Moon, and maybe some other exoplanet.
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Space station astronaut captures breathtaking view of the edge of the Earth – CNET
Posted: at 10:03 am
Thomas Pesquet's photograph of the Earth will wow you.
If the state of the planet is getting you down or you're just terrified that ducks can now speak human words, then I advise you to stop what you're doing for a few moments and gaze in awe at this photo by Thomas Pesquet, a French astronaut currently residing inside the International Space Station.
Pesquet, an engineer with the European Space Agency, is one of the members of the SpaceX Crew-2 mission and member of NASA's Expedition 65, which launched to the station in April. It's his second spaceflight and he's become known around these parts for delivering some absolutely surreal images of our home planet.
This may be his best yet.
Snapped from the cupola of the ISS, Pesquet's view of the Earth sees city lights "battle it out" with the light from distant stars. The orange band around the Earth is, according to astronomer Juan Carlos Munoz, the emission of sodium atoms, approximately 90 kilometers above Earth's surface.
There's also a faint green band just beyond it if you squint hard enough -- that's created by oxygen atoms being excited.
It's not easy to get such a photo and Pesquet notes he's missed his share of shots.
"Not only do you as a photographer have to stay extremely still holding the camera, but also the Space Station moves so fast that there will be some motion anyway," Pesquet explains in his photo caption. The ISS is travelling at over 17,000 miles an hour and completes an orbit over the Earth every 90 minutes or so.
It's a busy time up on the station, with the third SpaceX Crew-3 mission expected to launch on Halloween and begin ISS Expedition 66. Pesquet will take over as the commander in late October when the four-person crew on the Crew-3 mission join the station. Expedition 66 is also notable because it will include two Russian civilians, film director Klim Shipenko and actress Yulia Peresild, who will launch on a Soyuz rocket on Oct. 5 to film scenes for a movie called The Challenge. Not quite Tom Cruise, we know, but he's heading up there sometime soon, too.
If you're after more holy moly moments, you should visit Pesquet's Flickr account, which includes an assortment of space stunners.
From the lab to your inbox. Get the latest science stories from CNET every week.
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Astronauts in space will soon resurrect an AI robot friend called CIMON – Space.com
Posted: at 10:03 am
An AI-powered robot with a digital face is ready for a new mission on the International Space Station.
The robot, called CIMON-2 (it's short for Crew Interactive Mobile Companion) worked alongside two European astronauts on past missions to the station in recent years and just got a software upgrade that will enable it to perform more complex tasks with a new human crewmate later this year.
The cute floating sphere with a cartoon-like face has been stored at the space station since the departure of the European Space Agency's (ESA) astronaut Luca Parmitano in February 2020. The robot will wake up again during the upcoming mission of German astronaut Matthias Maurer, who will arrive at the orbital outpost with the SpaceX Crew-3 Dragon mission in October.
In the year and a half since the end of the last mission, engineers have worked on improving CIMON's connection to Earth so that it could provide a more seamless service to the astronauts, CIMON project manager Till Eisenberg at Airbus, which developed the intelligent robot together with the German Aerospace Centre DLR and the LMU University in Munich, told Space.com.
Related: A floating 'brain' will assist astronauts aboard the space station
"The sphere is just the front end," Eisenberg said. "All the voice recognition and artificial intelligence happens on Earth at an IBM data centre in Frankfurt, Germany. The signal from CIMON has to travel through satellites and ground stations to the data centre and back. We focused on improving the robustness of this connection to prevent disruptions."
CIMON relies on IBM's Watson speech recognition and synthesis software to converse with astronauts and respond to their commands. The first generation robot flew to the space station with Alexander Gerst in 2018. That robot later returned to Earth and is now touring German museums. The current robot, CIMON-2, is a second generation. Unlike its predecessor, it is more attuned to the astronauts' emotional states (thanks to the Watson Tone Analyzer). It also has a shorter reaction time.
"During the first steps in the development process, we had a delay of about ten seconds, which was not very convenient," Eisenberg said. "Through improving the software architecture we managed to get down to two seconds, just in time for the first mission. With further software upgrades, we have now tried to eliminate delays that might occur when the connection breaks."
Airbus and DLR have signed a contract with ESA for CIMON-2 to work with four humans on the orbital outpost in the upcoming years. During those four consecutive missions, engineers will first test CIMON's new software and then move on to allowing the sphere to participate in more complex experiments.
During these new missions CIMON will, for the first time, guide and document complete scientific procedures, Airbus said in a statement.
"Most of the activities that astronauts perform are covered by step by step procedures," Eisenberg said. "Normally, they have to use clip boards to follow these steps. But CIMON can free their hands by floating close by, listening to the commands and reading out the procedures, showing videos, pictures and clarifications on its screen."
The robot can also look up additional information and document the experiments by taking videos and pictures. The scientists will gather feedback from the astronauts to see how helpful the sphere really was and identify improvements for CIMON's future incarnations.
For now, CIMON has only been trained to navigate in the European Columbus module of the space station, Eisenberg said. The 11-pound (5kg) sphere floats around using its small air jets. A set of ultrasonic sensors together with a stereo camera help the robot navigate in space and avoid walls and equipment. CIMON is also fitted with a high-resolution camera that enables it to recognise faces of individual astronauts. Two smaller cameras on the sphere's sides are used to take pictures and videos. An overall nine microphones help CIMON to identify the source of sounds and detect and record speech.
In the future, the team hopes to make CIMON independent on the ground-based data center. Astronauts on future missions to the moon and Mars will surely appreciate a robotic assistant. However, for such missions it would be impossible to wait for the speech processing to be done on Earth.
"There is already enough computational power aboard the space station that would be able to support CIMON," Eisenberg said. "It's only a question of sharing these computational resources. But we want to start working in parallel on CIMON-3, which would be able to use services directly on board without the need of a connection to the ground."
Follow Tereza Pultarova on Twitter @TerezaPultarova. Follow us on Twitter @Spacedotcom and on Facebook.
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Nanoracks’ spinoff aims to bring food production to Earth’s deserts and orbital space – Space.com
Posted: at 10:03 am
High-tech solar greenhouses inspired by technology developed for missions to the moon and Mars could soon grow food in Arabian deserts and in Earth orbit, according to the space services company Nanoracks.
Nanoracks, known for deploying small satellites from the International Space Station, has just set up a spinoff in the United Arab Emirates (UAE) called StarLab Oasis. The new company, supported by the government of the desert-covered state, which imports 90% of its food, will open its first experimental greenhouse in 2022, the company's general manager Allen Herbert told Space.com.
In addition, the company's scientists will send seeds to space to induce mutations in the hopes of creating new, more resilient and productive varieties of key agricultural crops. This technique, also known as space mutagenesis, has been successfully used in China for more than three decades.
China is currently the only country in the world with a space breeding program that delivers benefits for the country's residents. China has been sending seeds for trips to space, a few weeks long, since the late 1980s. In 2006, it launched its Shijian-8 satellite which orbited and returned to Earth 470 pounds (215 kilograms) of vegetable, fruit and grain seeds.
More than 200 space-mutated crop varieties with improved yields, environmental resilience and disease resistance have been approved by agriculture regulators in China since the 1990s including the country's second most grown wheat variety, Luyuan 502.
Related: Could space greenhouses solve Earth's food crisis?
"A great amount of the world's sustainable and economically efficient food production will one day come from deserts, harsh environments and off Earth," Herbert said. "The reason for that is the abundance of renewable solar energy. I believe that thanks to the technology that we develop, we will be able to grow plants more efficiently in deserts and in space because of the available energy."
The progressing effects of climate change may make larger and larger swaths of the planet's arable land vulnerable to unpredictable weather. At the same time, global space agencies are looking into technology that could sustainably grow food in places far more inhospitable than the Earth, like the moon, Mars or other celestial bodies with freezing temperatures, no atmosphere and little liquid water. StarLab Oasis wants to harness and commercialize these developments to help turn countries that currently cannot feed their populations without international help into self-sufficient producers.
"Abu Dhabi is investing a lot into research and development of agricultural technologies," Herbert said. "The issue has more of an urgency for them than it has, for example, for the U.S. or U.K, who import much less food."
This urgency, Herbert added, extends to the entire Middle Eastern region, as well as Africa and South Asia. StarLab Oasis, which is directly supported by the Abu Dhabi Investment Office (ADIO), hopes that its space-inspired greenhouses and new more resilient crop varieties will help transform agriculture across many regions that currently rely on food imports.
"By the year 2100, two thirds of the world's population are expected to live in those regions," Herbert said. "What we're doing now in terms of food security is really, really important. We are really excited about our work because we believe that Abu Dhabi will become an important hub for that."
Nanoracks has previously flown plant seeds to the International Space Station, including palm tree seeds selected by the UAE Space Agency in 2019. These seeds are currently being studied by researchers at the UAE University, Herbert said.
Last year, Nanoracks expanded its footprint at the International Space Station with the Bishop airlock, which can pass five times more payload in and out of the station than the Nanoracks CubeSat Deployer located in the Japanese Experiment Module that the company currently uses.
Nanoracks is also working on technology that would turn spent rocket stages into miniature space stations. First of these stations might start operating in 2024 and it's quite likely that some of them will serve as StarLab Oasis's orbiting greenhouses, Herbert said.
Follow Tereza Pultarova on Twitter @TerezaPultarova. Follow us on Twitter @Spacedotcom and on Facebook.
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Russia announces plans to construct Space Station within five years, says efficiency will be higher than ISS – India Today
Posted: at 10:03 am
Days after Russian cosmonauts pointed at cracks on the International Space Station (ISS), Moscow on Tuesday announced its plans to create a new space station that will be "more efficient" than the present flying laboratory. The announcement was made by the general director of the Russian space agency, Roscosmos, Dmitry Rogozin.
In a statement, the Russian space agency chief said that Roscosmos plans to create a Russian orbital service station with an efficiency higher than that of the ISS. We want to make a station, the efficiency of which will be several orders of magnitude higher than that of the ISS, Rogozin was quoted as saying by TASS.
He stated that the new station, which is scheduled to begin deployment in five to six years, will have elements of artificial intelligence along with extravehicular robots that will likely reduce the pressure on cosmonauts from walking out of the airlock to conduct repairs and maintenance of the orbital outpost.
According to Rogozin, the station in combination with the promising nuclear tug "Zeus" can become a prototype for future systems of long-term interplanetary space flights.
The latest announcement comes just days after Russian cosmonauts discovered cracks in one of the segments of the flying laboratory that could widen in the coming months. "Superficial fissures have been found in some places on the Zarya module. This is bad and suggests that the fissures will begin to spread over time," Vladimir Solovyov, chief engineer of rocket and space corporation Energia, told RIA news agency.
The International Space Station flying in orbit around Earth. (Photo: Nasa)
Russia had already hinted at walking out of the International Space Station, which is in the last leg of its operation life. Moscow had warned the United States to lift sanctions imposed on the space sector or else it will withdraw from the ISS. Russia has been deliberating over withdrawing from the ISS, which is reaching its operational deadline, by 2025.
The sanctions that Rogozin talked about date back to 2014, when the US and western countries came down upon Moscow in the wake of its annexation of Crimea from Ukraine.
Rogozin had in April this year said that by 2030, Russia will be able to launch its own space station in orbit if President Vladimir Putin gives the go-ahead. According to reports, Moscow is planning to spend up to $6 billion for the ambitious project amid its growing proximity with Beijing, which has also been a cause of concern for Washington. The two countries have already joined hands to develop a Joint International Lunar Research Station (ILRS) on the Moon.
The two countries are now looking for collaboration from other nations for long-term, autonomous and comprehensive scientific experiments base on the lunar surface.
The US is already investigating reasons behind a recent mishap on the space station after the Russian Nauka module fired inadvertently throwing the flying laboratory in an uncontrolled spin. Washington has been calling partnering nations including Canada and Europe to keep the Space Station functioning amid a new alternative from China's under-construction space Station Tinagong.
While the ISS reaches its operational age, Nasa has been pushing for extending its services till 2030, however, Russia's exit could jeopardise its plans.
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THIS WEEK @NASA: SpaceX Cargo Dragon Docks to Station, Long-Distance Call to the Space Station – SpaceCoastDaily.com
Posted: at 10:03 am
latest happenings around NASA
ABOVE VIDEO: A long-distance call to space, space station cameras capture Hurricane Ida, and another successful cargo delivery to the station a few of the stories to tell you about This Week at NASA!
A Long-Distance Call to the Space Station
Guys, you really look good Bill Nelson, NASA Administrator
During a visit to our Johnson Space Centers Christopher C. Kraft Jr. Mission Control Center, NASA Administrator Bill Nelson, Deputy Administrator Pam Melroy and several members of Congress talked with the crew aboard the International Space Station about the stations critical role in low-Earth orbit.
The space station is a really great research platform, so theres lots of instruments outside the space station that are constantly taking data and can take data for years.Megan McArthur, NASA Astronaut
I just cant tell you how awesome it is to see all of you, especially the wonderful diversity of the crew.Pam Melroy, NASA Deputy Administrator
They also touched on the centers work for NASAs Artemis program to build a long-term human presence on and around the Moon
And then were going to Mars. Onward and upward.Bill Nelson, NASA Administrator
Hurricane Ida Seen from Space
Cameras on the space station captured views of Hurricane Ida as the category 4 storm neared the southeast Louisiana coast, where it eventually made landfall on Aug. 29, packing sustained winds of 150 miles per hour. More than 1 million customers reportedly lost power by midday on Aug. 30. Idas landfall came exactly 16 years to the day after historic hurricane Katrina also hit this region.
Hurricane Ida Impacts to Michoud, Stennis
When Hurricane Ida made landfall on Aug. 29, the storm affected our Michoud Assembly Facility in New Orleans and Stennis Space Center in Mississippi. No injuries have been reported, but both locations sustained damage. Stennis was able to open for some operations while Michoud was closed with limited access to essential personnel only, as teams conducted detailed damage assessments and initial cleanup work. Michoud manufactures and assembles some of the largest parts of NASAs Space Launch System rocket and Orion spacecraft and Stennis is the agencys premier propulsion test complex.
SpaceX Cargo Dragon Docks to Station
A SpaceX Dragon cargo spacecraft arrived at the International Space Station on Aug. 30, a day after launching from our Kennedy Space Center. The Dragon delivered more than 4,800 pounds of cargo including about 2,300 pounds of new science experiments that will look at how microgravity affects plant genetics, robotic assistants, bone tissue and astronaut vision among other phenomena.
Asking More Industry Input on Artemis LTV Solutions
NASA is asking interested American companies for more input about approaches, options and solutions to providing a lunar terrain vehicle or LTV. The LTV similar to the Apollo era Moon Buggy is an unenclosed rover that will transport astronauts wearing spacesuits around the lunar South Pole during Artemis exploration surface missions to the Moon. The LTV will need to last at least 10 years to span multiple Artemis missions.
Russian Spacewalk Outside Space Station
On Sept. 3, Russian cosmonauts Oleg Novitskiy and Pyotr Dubrov of Roscosmos ventured outside the International Space Station on the first of up to 11 spacewalks to prepare the new Nauka multipurpose laboratory module for operations in space. Nauka arrived at the station on July 29, eight days after launching from the Baikonur Cosmodrome in Kazakhstan.
Thats whats up this week @NASA
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Stunning Astronaut Photo From the Space Station Captures Tokyos Lights at Night – SciTechDaily
Posted: at 10:03 am
By NASA Earth ObservatorySeptember 4, 2021
December 23, 2020
Strings of light emanate from the Imperial Palace in the citys center and follow the expressway system outward.
Months before the world turned its eye toward Tokyo for the2020 Summer Olympics, an astronaut on the International Space Station captured this image of the Japanese megacity. The photograph offers a distinctive, high-resolution view of the citys structure via its nighttime light.
Many cities are oriented around a center. In most modern cities, this is abright downtown. In Tokyo, its the Imperial Palace. Strings of light emanate from the palace and follow Tokyos major expressway system outward. The brightest points indicate clusters of large buildings in several downtown areas. Major sports venueslike the Olympic Stadium and horse racing tracksalso leave subtle marks on the Tokyo nightscape.
In a city so well illuminated, the dark areas stand out as much as the bright. As Tokyos population pushes past 40 million, the city is reaching geographic limits on outward growth. Naturally bounded by Tokyo Bay to the east and mountains to the west, darker areas farther from the city center are often designated parks. The park system of Tokyo is extensive, covering 36 percent of the total land area in the prefecture.
The other negative space in the photo is Tokyo Bay and the major rivers (the Sumida, Tama, and Edo) that run through the city and into the bay. The only interruption to the darkness of the bay is the small points of light caused by ships traveling to and from Tokyos busy docks. The sharp, angular nature of the docks contrasts with the winding of the rivers and highlights their human-made origin.
Astronaut photographISS064-E-15098was acquired on December 23, 2020, with a Nikon D5 digital camera using a 400 millimeter focal length and is provided by the ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit, Johnson Space Center. The image was taken by a member of theExpedition 64 crew.The image has been cropped and enhanced to improve contrast, and lens artifacts have been removed. TheInternational Space Station Programsupports the laboratory as part of theISS National Labto help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSCGateway to Astronaut Photography of Earth.Caption by Alex Stoken, Jacobs, JETS Contract at NASA-JSC.
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Astronauts on the ISS Share Disturbing Image of Hurricane Larry, Looks Larger Than Ida – autoevolution
Posted: at 10:03 am
Humanity has had its share of natural disasters this year, with people all over the world growing to hate the names Henri, Ida, or Elsa. This years hurricane season was unmerciful and just when you think winds have calmed down, another one of these bad-tempered boys or girls starts wreaking havoc in one place or another. These days, we have hurricane Larry in the limelight, and astronauts on the Space Station tell us it looks even bigger than Ida.As administrator Ben Friedman from the NOAA (National Oceanic and Atmospheric Administration) said it best, it takes just one storm to devastate an entire community, which is why everyone is keeping an eye on Larry, including the astronauts in space.
Megan McArthur recently shared an image on social media giving us a glimpse of hurricane Larry, as seen from the International Space Station (ISS). Shes been monitoring Larry for days now, and according to her latest image caption, it looks much larger than Ida, at least from the astronauts viewpoint on the Space Station.
According to the National Hurricane Center (NHC), Larry is classified as a Category 3 hurricane, which is pretty massive. Category 3 hurricanes are considered major, with sustained winds between 111 to 129 mph (178 to 207 kph), and Larry packs in winds of up to 115 mph (185 kph).
The same NHC describes category 3 hurricanes as being able to remove roofs from homes, uproot trees, and make water and electricity unavailable for days or even weeks.
This classification is based on the Saffir-Simpson Hurricane Wind Scale, with the most catastrophic hurricanes being the Category 5 ones, with sustained winds of more than 157 mph (252 kph and higher). These can make the affected areas uninhabitable for weeks or even months.
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Explore some of the best wildlife photography of the year – kuna noticias y kuna radio
Posted: at 10:03 am
By Ashley Strickland, CNN
Our planet is wonderfully wild.
Its easy to forget that amid the daily hustle and bustle of our lives especially for those of us who only see wildlife when a bird or a squirrel darts by the window.
Remember when you were a kid and evidence of Earths menagerie was all around you? Whether we see them living in mighty jungles, grassy plains or desert oases, our view of animals shapes how we look at the world, from the time were just grasping how to speak, read and write.
A photograph of a wild animal can stop you in your tracks for me, the first time was when I saw an image of a rare snow leopard when I was 6.
These images carry an intrinsic message, something we knew as children but maybe forgot: We can do more to protect our world and all of its life so future generations may share in the same joy of discovery.
Narwhal shrimp in the deep blue water of the French Mediterranean. Ghost fungus in Australia. Cheetahs battling to swim across a raging river.
These are some of the stunning entries to the Wildlife Photographer of the Year competition, organized by the Natural History Museum in London.
The photos reveal some of the wonder to be found in nature, as well as challenges our planet is facing due to the climate crises.
In the face of so much awe, dont forget to laugh. Photographers also managed to capture animals at their funniest in the 2021 Comedy Wildlife Photo Awards Im torn between the goofy gophers and the grumpy bird. You can vote for the image that makes you chuckle the most until October 10.
The vast, inhospitable deserts across the Arabian Peninsula dont seem ideal for a long trek, but ancient Green Arabia was much more welcoming to our early human ancestors.
Periods of heavy rainfall in the desert between 400,000 and 50,000 years ago created lush grasslands that served as the perfect backdrop for both animals and humans migrating to and from Africa.
Perhaps the most intriguing idea to result from this latest finding is that multiple species of early humans, including Neanderthals, may have interacted and mated in this area. While this helps fill a gap in human history, the discovery points to a more ancient mystery.
Sometimes, space gets a little complicated (and not just when were trying to figure out the universe).
Despite threatening to pull Russia out of the International Space Station prematurely, the head of the countrys space agency is now promising to remain NASAs partner at least until the orbiting outpost is eventually retired. This is a family, where a divorce within a station is not possible, Dmitry Rogozin told CNN in his first interview with western media since becoming Roscosmos director general.
The Federal Aviation Administration is also investigating Richard Bransons recent flight to space, saying the rocket-powered plane operated by his company, Virgin Galactic, veered off course during its descent.
But space doesnt always have to be so serious. If you prefer to jam out to some stellar tunes while watching spacewalks, check out our out-of-this-world playlist. These songs are perfectly suited for listening while you watch a starman waiting in the sky. And who says food has to be boring on the space station? Watch these astronauts have a pizza party in space.
Its been a rough week for many across the US facing natural disasters including wildfires, drought and Hurricane Ida that are only exacerbated by the climate crises.
Hurricane Ida forged a path of devastation from the southern states up through the Northeast, bringing unusually catastrophic flooding to New York City.
Human-caused climate change is making hurricanes stronger, slower and wetter. Scientists warn that storms like Ida will only become more common as the planet warms.
What can we do stop it? Deep cuts to greenhouse gas emissions and ending our dependence on fossil fuels could stave off some of the more catastrophic climate change impacts the world is currently experiencing.
If youve missed watching gymnastics since the Olympics ended, look no further than the wacky world of agile animals.
Meet spotted skunks. Theyre the acrobats of the skunk world, and scientists have discovered more of these species than they previously thought existed.
To scare off predators, they perform an intimidatingly impressive handstand. The squirrel-sized skunks kick out their back legs, puff up their tails and rush at their attackers they even use this trick to freak out mountain lions.
And while you may think that geckos can scale just about anything because they have sticky feet, guess again. When leaping from tree to tree, some of these lizards crash headfirst but a remarkable (and awkward) maneuver allows them to land securely at ballistic speeds and they owe it all to another part of their anatomy.
Consider these worthy of a double-take:
Babies may have the cutest laughs ever and infant laughter is very similar to that of another species.
The fossil of Big John, the worlds largest Triceratops skeleton, is up for sale, but youll need deep pockets to bring him home.
Mars is home to planet-encircling dust storms just one reason we have to be able to forecast the weather on other worlds before we can visit them.
Like what youve read? Oh, but theres more. Sign up here to receive in your inbox the next edition of Wonder Theory, brought to you by CNN Space and Science writer Ashley Strickland, who finds wonder in planets beyond our solar system and discoveries from the ancient world.
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Explore some of the best wildlife photography of the year - kuna noticias y kuna radio
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What Is Genetic Engineering?- Definition, Types, Process And …
Posted: September 6, 2021 at 3:00 pm
A molecular genetic technique used for the direct manipulation, alteration or modification of genes or genome of organisms in order to manipulate the phenotypes is called genetic engineering.
Or in other words, we can say,
Genetic engineering is a technique using which the genetic composition of an organism can be altered.
The technique is often known as genetic manipulation, genetic modification or genetic alterations, broadly it is categorized as genetic engineering.
In this technique, a recombinant DNA is constructed and inserted into the host genome using a vector. Or we can delete some mutant sequences from a genome.The first recombinant DNA was constructed by Paul Berg in 1972.
Using the genetic engineering technique genetically modified organisms can be constructed which are economically very important for us.
It is employed for the production of improved plant species, therapeutic drugs or proteins, prevention of inherited genetic disorders and construction of a genetically modified organism.
In the present article, we will our major talk is genetic engineering and its applications. The content of the article is,
Humans are manipulating the genetic material of many organisms for long. Using selective breeding and cross-hybridization, economically important plant species were created by us.
The purpose of developing the genetic engineering or genetic manipulating technique is to produce organisms or phenotypes which are useful to us. Genetic engineering techniques are used for,
In genetic engineering, two different cells DNA are combined and inserted into the host genome via vector. Important components of the gene manipulation experiments are explained here.
Gene of interest: A DNA sequence which we want to insert in our target cells.
Vector: using the plasmid DNA like vectors the gene of interest is inserted into the host genome. Vectors are kind of vehicles which transfer the genetic material.
Target cells: target cells are the population of cells whose genome we wish to manipulate or change.The general process of gene therapy.
A technique used to insert or delete a mutant gene or to manipulate a genome of an organism is known as genetic engineering.
The term genetic engineering was first used by the science-fiction novelist, not by any scientist.In the year, 1951, Jack Williamson used the term genetic engineering for the first time in his novel Dragons island.
Soon after that, the molecular structure of the DNA was discovered by Watson and Crick, although the genetic experiments were popular since the time of Mendel.
The first recombinant DNA was constructed by Paul Berg in 1972. In the same year, Herbert Boyer and Stanley Cohen performed gene transfer experiments.In 1974, Rudolf Jaenisch had created genetically modified mice, the first time in the history of genetics.
After the success of Rudolf, the genetically modified or genetically engineered tobacco plant species was developed in 1976.
During this period (between 1960 to 1990) restriction digestion, ligation and PCR like techniques were discovered which gave wings to genetic engineering technology.
Related article: What is a genome?
Recombinant DNA- A recombinant DNA technology is a type of genetic engineering technology in which an artificial DNA molecule is constructed by ligating two different DNAs using physical methods.For that, the gene of interest is inserted into the plasmid vector and used for gene transfer experiments.
Gene delivering-Gene delivering technique is employed for the insertion of a gene of interest into the host genome.
Electrophoration, solicitation and viral vector-mediated gene transfer, liposome-mediated gene transfer, transposon-mediated gene transfer are some of the methods used for that.
Gene editing- A gene-editing technique is used to edit the genome in which an undesired DNA sequence is removed or a new gene can be inserted into the host genome. CRISPR-CAS9, TALEN and ZFN are some known gene-editing tools used in gene therapy experiments.
Read more:What is gene editing and CRISPR-CAS9?
The genetic engineering technique is used for many different purposes thus we must have to decide first the purpose of the experiment.The entire process of genetic engineering can be divided into 5 broader steps:
The gene must contain a sequence of DNA that we want to study and for that, a gene has some special characteristics. A candidate gene should have high GC content and a lower repetitive DNA sequence.
In addition to this, the gene of interest must not be too long- only a few kb genes can be successfully inserted.Longer the gene higher the chance of failure. The candidate gene must have a start and stop codon in it. Related article:What is The Genetic Code?
Now, the gene of interest can be isolated from the rest of the DNA using either restriction digestion or polymerase chain reaction.
The restriction endonucleases are the bacterial enzyme having the power to digest DNA sequence at a specific location.Using a specific type of restriction endonuclease we can cut and isolated our gene of interest.
The restriction digestion method is explained in our previous article: What is restriction digestion?
In the polymerase chain reaction, using the information of the gene sequence, the gene of interest or the candidate gene is amplified in the thermocycler.
The machine, using the polymerase chain reaction makes millions of copies of a gene of our interest. Through the process of agarose gel electrophoresis, the amplified gene is isolated.
If the gene of interest is well studied, previously, then the information of a gene is accessible in the genetic library and we can use it for the artificial synthesis of a gene of our interest. (using the genetic library information, the gene can also be artificially synthesized)
In the next step, perform DNA purification, if required. Now our DNA is ready to insert in a plasmid.
Selecting plasmid for the genetic engineering experiment is one of the crucial steps in the entire experiment.Before selecting the plasmid, we must understand why the plasmid is used in the gene transfer experiments.
The plasmid DNA is a circular, double-stranded cytoplasmic DNA of the bacteria that replicate independently.
Scientists are using it as a vehicle for transferring the gene of interest to the target location in the genome.It can efficiently transfer the gene at the target location. The structure of plasmid is explained in the figure below,The general structure of the plasmid DNA used in recombinant DNA technology.
Related article: What is a plasmid?
Preparation of plasmid:
Select the plasmid which suits your experiment.
The plasmid must have the origin of replication, promoter region, antibiotic resistance gene and other important sequences.Using the restriction digestion method, an insertion site is introduced in the plasmid at which our gene of interest is ligated.
Utilizing the T4 DNA ligase like power sealer, the DNA of our interest in inserted and ligated in the plasmid.Along with the plasmid, a selectable marker is also introduced in the plasmid DNA to identify the recombinant DNA.
In addition to this, a promoter region and terminator sequences are also included in the plasmid for the effective expression of a gene of our interest. A plasmid with our gene of interest and some other important sequences is now referred to as a recombinant DNA molecule.
Now our recombinant DNA is ready for for the expression.
If we are performing gene cloning than the plasmid is inserted in the bacterial host, for that generally E.Coli are commonly used.Once the bacteria starts dividing, our recombinant plasmid DNA is also replicated along with it.
Now we have the multiple copies of our plasmid DNA which are extracted using the plasmid DNA extraction kit and used for the transformation experiments.The process of Genetic engineering.
Transporting the recombinant DNA into the recipient cell or the host genome is yet another tedious and difficult task.Various methods for recombinant DNA insertion is used for various cell types because a single method cant used for all cell types.
Using stress- bacteria easily uptake the plasmid DNA using some stress factors such as heat or electrical sock.
Microinjection- a sharp needle is used for insertion of DNA directly into the nucleus of a cell, however, the method is less effective and required a higher level of expertise for that.
Electroporation- one of the best methods having a great success rate is the electrophoration method in which the recombinant DNA is inserted into the host genome by permeabilizing the cell with electrical current.
We have covered a whole article on it. Read it here:Electroporation- A Modern Gene Transfer Technique.
Sonication- sonication is yet another good method sometimes used in the gene transfer experiment in which the recombinant DNA is inserted into the target cell using ultrasonic waves. The ultrasonic waves also increase the permeability of cells.
Liposome mediated gene transfer- Using an artificial cell-like outer coat known as a liposome- recombinant DNA can be inserted in the host genome.
Gene transfer using bacterial infection-This method is one of the popular methods and routinely used in plant genetic engineering experiments. Here, the plant species is infected with the transformed bacteria for inserting a gene of interest.
Agrobacterium tumifecian is utilized to insert recombinant DNA into the plant cell. A gene of interest is inserted into the Ti- plasmid of the Agrobacterium. The plant cells are infected by this bacteria cell culture and the transformed cells are regenerated using the plant tissue culture methods.
Chemical in gene transfer- Some metal ions, chemicals, and solutions of different chemicals are also employed in the gene transfer experiments, however, the success rate is too low as compared with the other methods.
Our work is still not completed.
Now we have to conform, whether the recombinant DNA is inserted in our target cell or not. Various molecular genetic technologies are used for that.In the traditional culturing method, the presence or absence of a selectable marker is used to differentiate transformed cells from the untransformed cells.
Although, it is not necessary for the PCR based detection method.The polymerase chain reaction-based detection method is widely accepted more trusted than other methods.
DNA is extracted from the transformed cell and amplified using the primers complementary to our gene of interest or our recombinant DNA.
If the recombinant DNA is present it surely amplified otherwise no amplification obtained. For the two factor conformation, one primer set complementary to recombinant DNA specific and one set of primer complementary to the selectable marker sequence are taken and multiplex PCR is performed.
For validating results, amplification must be obtained in both the reaction.
But wait a minute!
What happened if any mutation occurred during the experiment in our gene of interest? Because the PCR can only amplify the DNA.We must need sequence information to detect the mutation.
For that, the DNA sequencing method is used.
DNA is extracted from the transformed cells and the gene of interest is amplified using the PCR. Now the PCR amplicons are used for DNA sequencing in which using the fluorescent chemistry the sequence of our gene of interest is orderly determined.
Once all the parameters for determining the gene of interest fulfilled, our cells are now ready to inject in the host organism or for tissue culture experiments.
Now coming to the important point of this topic, What is genetic engineering used for?
Genetic engineering has great industrial and agricultural value. It is practiced in medicine, genetic research, agriculture, crop improvement, and for production of therapeutic drugs.
It is also used in the development of genetically modified organisms.Here we are discussing some of the important applications of genetic engineering.
The recombinant DNA technology is used in the crop improvement and development of new economically important traits. Some of them are:
A classical example of it is the BT cotton- one of the types of genetically modified species provides resistance to the plant against bacillus thuringiensis.
Process of developing genetically modified plant species:
A gene of interest is isolated from the organism using restriction digestion or amplified by the polymerase chain reaction.Recombinant DNA is constructed by inserting a gene of interest into the plasmid, here the T- plasmid is used.
In the next step, the T- plasmid is inserted into the agrobacterium.In the last step, the plant species is infected with the transformed bacterial cells and cultured.The entire process of it is shown in the figure below,Agrobacterium-mediated gene transfer in plant species.
GMF- genetically modified food is another best application of genetic engineering in which economically important food products are constructed using recombinant DNA technology.
The classical example of it is Flavr Savr tomato, a genetically modified tomato species made up of the antisense RNA technology.It has great economic values as the GM- tomato can easily be transported from one place to another place.
Another important application of genetic engineering is genetically modified or genetically engineered food.
The quality of some of the food products such as cotton, corn, and soybeans are improved using the present recombinant DNA technology.The aim of developing genetically modified crops or plant species is to make them economical important, nutritious, protein-rich, disease, and stress resistance.
Even, using genetic engineering and tissue culture techniques insecticides resistance plant species in tobacco, potato, corn, and cotton are developed.
In addition to this, some modified plants capable of generating their own fertilizers can also be created using the present genetic modification technique.
Transgenic model organisms are developed to test different parameters- the function of certain genes can be determined by designing the transgenic microorganism and animal models.
Harmful pathogens and insecticidal pasts can be destroyed using genetically modified microorganisms which are capable of degrading toxics.
Medicinal applications:
Low-cost drugs, hormones, enzymes, and vaccines are created using genetic engineering tools.
The anti-blood-clotting factor is the best example of it in which the plasminogen activating enzyme which is capable of dissolving the blood clot is artificially designed and used in the patients with coronary artery disease or heart attack.
Other examples are two other therapeutic proteins somatostatin and lymphokines which are worked against several disease conditions and can be synthesized artificially.Insulin is yet a classic example of a therapeutic protein designed using genetic engineering technology.
A gene for insulin is isolated by restriction digestion or through PCR and inserted int the plasmid.The recombinant plasmid DNA is immediately inserted into the bacterial or yeast cell in which the plasmid is multiplying.As the microorganism starts dividing it starts making artificial insulin.
A large amount of insulin produced using the same technique at an industrial scale. The detailed outline of insulin production is shown in the figure below,Production of insulin using genetic engineering technology.
The commercial production of insulin started after the FDA approval in 1982.
Recombinant vaccines:
Vaccines against smallpox, herpes simplex virus and hepatitis are produced using the genetic engineering technique.The vaccines are the inactivated viral particles used to induce an immune response against that pathogen, however, the chance of contamination is high in it.
Using the recombinant DNA technology scientists has created a unique type of vaccines that only contains the DNA for viral coat protein thus the pathogen can never be activated again.The main advantage of it is that it is safer, contamination-free and more reactive.
Genetic engineering in gene therapy:
Using the gene therapy or gene transfer technique, inherited genetic disorders can be cured. Cystic fibrosis, Duchenne muscular dystrophy and sickle cell anemia like gene therapies are now under the final clinical trial phase and ready to use on patients.
In the gene therapy, a faulty, non-function or mutated gene is replaced with the wild type one using the same technique as explained above.
We have covered amazing articles on gene therapy, read it here:
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What Is Genetic Engineering?- Definition, Types, Process And ...
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