This radar image captured by NASA's Magellan mission to Venus in 1991 shows a corona, a large circular structure 120 miles in diameter, named Aine Corona.

When a star's mass is ejected during a supernova, it expands quickly. Eventually, it will slow and form a hot bubble of glowing gas. A white dwarf will emerge from this gas bubble and move across the galaxy.

The afterglow of short gamma ray burst that was detected 10 billion light-years away is shown here in a circle. This image was taken by the Gemini-North telescope.

This Hubble Space Telescope image shows NGC 7513, a barred spiral galaxy 60 million light-years away. Due to the expansion of the universe, the galaxy appears to be moving away from the Milky Way at an accelerate rate.

This artist's concept illustration shows what the luminous blue variable star in the Kinman Dwarf galaxy may have looked like before it mysteriously disappeared.

This is an artist's illustration of a supermassive black hole and its surrounding disk of gas. Inside this disk are two smaller black holes orbiting one another. Researchers identified a flare of light suspected to have come from one such binary pair soon after they merged into a larger black hole.

This image, taken from a video, shows what happens as two objects of different masses merge together and create gravitational waves.

This is an artist's impression showing the detection of a repeating fast radio burst seen in blue, which is in orbit with an astrophysical object seen in pink.

Fast radio bursts, which make a splash by leaving their host galaxy in a bright burst of radio waves, helped detect "missing matter" in the universe.

A new type of explosion was found in a tiny galaxy 500 million light-years away from Earth. This type of explosion is referred to as a fast blue optical transient.

Astronomers have discovered a rare type of galaxy described as a "cosmic ring of fire." This artist's illustration shows the galaxy as it existed 11 billion years ago.

This is an artist's impression of the Wolfe Disk, a massive rotating disk galaxy in the early universe.

A bright yellow "twist" near the center of this image shows where a planet may be forming around the AB Aurigae star. The image was captured by the European Southern Observatory's Very Large Telescope.

This artist's illustration shows the orbits of two stars and an invisible black hole 1,000 light-years from Earth. This system includes one star (small orbit seen in blue) orbiting a newly discovered black hole (orbit in red), as well as a third star in a wider orbit (also in blue).

This illustration shows a star's core, known as a white dwarf, pulled into orbit around a black hole. During each orbit, the black hole rips off more material from the star and pulls it into a glowing disk of material around the black hole. Before its encounter with the black hole, the star was a red giant in the last stages of stellar evolution.

This artist's illustration shows the collision of two 125-mile-wide icy, dusty bodies orbiting the bright star Fomalhaut, located 25 light-years away. The observation of the aftermath of this collision was once thought to be an exoplanet.

This is an artist's impression of the interstellar comet 2I/Borisov as it travels through our solar system. New observations detected carbon monixide in the cometary tail as the sun heated the comet.

This rosette pattern is the orbit of a star, called S2, around the supermassive black hole at the center of our Milky Way galaxy.

This is an artist's illustration of SN2016aps, which astronomers believe is the brightest supernova ever observed.

This is an artist's illustration of a brown dwarf, or a "failed star" object, and its magnetic field. The brown dwarf's atmosphere and magnetic field rotate at different speeds, which allowed astronomers to determine wind speed on the object.

This artist's illustration shows an intermediate-mass black hole tearing into a star.

This is an artist's impression of a large star known as HD74423 and its much smaller red dwarf companion in a binary star system. The large star appears to pulsate on one side only, and it's being distorted by the gravitational pull of its companion star into a teardrop shape.

This is an artist's impression of two white dwarfs in the process of merging. While astronomers expected that this might cause a supernova, they have found an instance of two white dwarf stars that survived merging.

A combination of space and ground-based telescopes have found evidence for the biggest explosion seen in the universe. The explosion was created by a black hole located in the Ophiuchus cluster's central galaxy, which has blasted out jets and carved a large cavity in the surrounding hot gas.

The red supergiant star Betelgeuse, in the constellation of Orion, has been undergoing unprecedented dimming. This image was taken in January using the European Southern Observatory's Very Large Telescope.

This new ALMA image shows the outcome of a stellar fight: a complex and stunning gas environment surrounding the binary star system HD101584.

NASA's Spitzer Space Telescope captured the Tarantula Nebula in two wavelengths of infrared light. The red represents hot gas, while the blue regions are interstellar dust.

A white dwarf, left, is pulling material off of a brown dwarf, right, about 3,000 light-years from Earth.

This image shows the orbits of the six G objects at the center of our galaxy, with the supermassive black hole indicated with a white cross. Stars, gas and dust are in the background.

After stars die, they expel their particles out into space, which form new stars in turn. In one case, stardust became embedded in a meteorite that fell to Earth. This illustration shows that stardust could flow from sources like the Egg Nebula to create the grains recovered from the meteorite, which landed in Australia.

The former North Star, Alpha Draconis or Thuban, is circled here in an image of the northern sky.

Galaxy UGC 2885, nicknamed the "Godzilla galaxy," may be the largest one in the local universe.

The host galaxy of a newly traced repeating fast radio burst acquired with the 8-meter Gemini-North telescope.

The Milky Way's central region was imaged using the European Southern Observatory's Very Large Telescope.

This is an artist's illustration of what MAMBO-9 would look like in visible light. The galaxy is very dusty and it has yet to build most of its stars. The two components show that the galaxy is in the process of merging.

Astronomers have found a white dwarf star surrounded by a gas disk created from an ice giant planet being torn apart by its gravity.

New measurements of the black hole at the center of the Holm 15A galaxy reveal it's 40 billion times more massive than our sun, making it the heaviest known black hole to be directly measured.

A close-up view of an interstellar comet passing through our solar system can be seen on the left. On the right, astronomers used an image of Earth for comparison.

The galaxy NGC 6240 hosts three supermassive black holes at its core.

Gamma-ray bursts are shown in this artist's illustration. They can be triggered by the collision or neutron stars or the explosion of a super massive star, collapsing into a black hole.

Two gaseous clouds resembling peacocks have been found in neighboring dwarf galaxy the Large Magellanic Cloud. In these images by the ALMA telescopes, red and green highlight molecular gas while blue shows ionized hydrogen gas.

An artist's impression of the Milky Way's big black hole flinging a star from the galaxy's center.

The Jack-o'-lantern Nebula is on the edge of the Milky Way. Radiation from the massive star at its center created spooky-looking gaps in the nebula that make it look like a carved pumpkin.

This new image from the NASA/ESA Hubble Space Telescope captures two galaxies of equal size in a collision that appears to resemble a ghostly face. This observation was made on 19 June 2019 in visible light by the telescope's Advanced Camera for Surveys.

A new SPHERE/VLT image of Hygiea, which could be the Solar System's smallest dwarf planet yet. As an object in the main asteroid belt, Hygiea satisfies right away three of the four requirements to be classified as a dwarf planet: it orbits around the Sun, it is not a moon and, unlike a planet, it has not cleared the neighbourhood around its orbit. The final requirement is that it have enough mass that its own gravity pulls it into a roughly spherical shape. This is what VLT observations have now revealed about Hygiea.

This is an artist's rendering of what a massive galaxy from the early universe might look like. The rendering shows that star formation in the galaxy is lighting up the surrounding gas. Image by James Josephides/Swinburne Astronomy Productions, Christina Williams/University of Arizona and Ivo Labbe/Swinburne.

This is an artist's illustration of gas and dust disk around the star HD 163296. Gaps in the disk are likely the location of baby planets that are forming.

This is a two-color composite image of comet 2I/Borisov captured by the Gemini North telescope on September 10.

This illustration shows a young, forming planet in a "baby-proof" star system.

Using a simulation, astronomers shed light on the faint gaseous filaments that comprise the cosmic web in a massive galaxy cluster.

The Hubble Space Telescope's Wide Field Camera observed Saturn in June as the planet made its closest approach to Earth this year, at approximately 1.36 billion kilometers away.

An artist's impression of the massive bursts of ionizing radiation exploding from the center of the Milky Way and impacting the Magellanic Stream.

The Atacama Large Millimeter/submillimeter Array captured this unprecedented image of two circumstellar disks, in which baby stars are growing, feeding off material from their surrounding birth disk.

This is an artist's illustration of what a Neptune-size moon would look like orbiting the gas giant exoplanet Kepler-1625b in a star system 8,000 light-years from Earth. It could be the first exomoon ever discovered.

This infrared image from NASA's Spitzer Space Telescope shows a cloud of gas and dust full of bubbles, which are inflated by wind and radiation from massive young stars. Each bubble is filled with hundreds to thousands of stars, which form from dense clouds of gas and dust.

This is an artist's impression of the path of the fast radio burst FRB 181112 traveling from a distant host galaxy to reach the Earth. It passed through the halo of a galaxy on the way.

After passing too close to a supermassive black hole, the star in this artist's conception is torn into a thin stream of gas, which is then pulled back around the black hole and slams into itself, creating a bright shock and ejecting more hot material.

Comparison of GJ 3512 to the Solar System and other nearby red-dwarf planetary systems. Planets around a solar-mass stars can grow until they start accreting gas and become giant planets such as Jupiter, in a few millions of years. But we thought that small stars such asProxima, TRAPPIST-1, Teegarderns star and GJ 3512, could not form Jupiter mass planets.

A collision of three galaxies has set three supermassive black holes on a crash course with each other in a system one billion light-years from Earth.

2I/Borisov is the first interstellar comet observed in our solar system and only the second observed interstellar visitor to our solar system.

KIC 8462852, also known as Boyajian's Star or Tabby's Star, is 1,000 light-years from us. It's 50% bigger than our sun and 1,000 degrees hotter. And it doesn't behave like any other star, dimming and brightening sporadically. Dust around the star, depicted here in an artist's illustration, may be the most likely cause of its strange behavior.

This is an artist's impression of a massive neutron star's pulse being delayed by the passage of a white dwarf star between the neutron star and Earth. Astronomers have detected the most massive neutron star to date due to this delay.

The European Southern Observatory's VISTA telescope captured a stunning image of the Large Magellanic Cloud, one of our nearest galactic neighbors. The near-infrared capability of the telescope showcases millions of individual stars.

Astronomers believe Comet C/2019 Q4 could be the second known interstellar visitor to our solar system. It was first spotted on August 30 and imaged by the Canada-France-Hawaii Telescope on Hawaii's Big Island on September 10, 2019.

A star known as S0-2, represented as the blue and green object in this artist's illustration, made its closest approach to the supermassive black hole at the center of the Milky Way in 2018. This provided a test for Einstein's theory of general relativity.

This is a radio image of the Milky Way's galactic center. The radio bubbles discovered by MeerKAT extend vertically above and below the plane of the galaxy.

A kilanova was captured by the Hubble Space Telescope in 2016, seen here next to the red arrow. Kilanovae are massive explosions that create heavy elements like gold and platinum.

This is an artist's depiction of a black hole about to swallow a neutron star. Detectors signaled this possible event on August 14.

This artist's illustration shows LHS 3844b, a rocky nearby exoplanet. It's 1.3 times the mass of Earth and orbits a cool M-dwarf star. The planet's surface is probably dark and covered in cooled volcanic material, and there is no detectable atmosphere.

An artist's concept of the explosion of a massive star within a dense stellar environment.

Galaxy NGC 5866 is 44 million light-years from Earth. It appears flat because we can only see its edge in this image captured by NASA's Spitzer Space Telescope.

The Hubble Space Telescope took a dazzling new portrait of Jupiter, showcasing its vivid colors and swirling cloud features in the atmosphere.

This is an artist's impression of the ancient massive and distant galaxies observed with ALMA.

Glowing gas clouds and newborn stars make up the Seagull Nebula in one of the Milky Way galaxy's spiral arms.

An artist's concept of what the first stars looked like soon after the Big Bang.

Spiral galaxy NGC 2985 lies roughly over 70 million light years from our solar system in the constellation of Ursa Major.

Early in the history of the universe, the Milky Way galaxy collided with a dwarf galaxy, left, which helped form our galaxy's ring and structure as it's known today.

An artist's illustration of a thin disc embedded in a supermassive black hole at the center of spiral galaxy NGC 3147, 130 million light-years away.

Hubble captured this view of a spiral galaxy named NGC 972 that appears to be blooming with new star formation. The orange glow is created as hydrogen gas reacts to the intense light streaming outwards from nearby newborn stars.

This is jellyfish galaxy JO201.

The Eta Carinae star system, located 7,500 light-years from Earth, experienced a great explosion in 1838 and the Hubble Space Telescope is still capturing the aftermath. This new ultraviolet image reveals the warm glowing gas clouds that resemble fireworks.

'Oumuamua, the first observed interstellar visitor to our solar system, is shown in an artist's illustration.

This is an artist's rendering of ancient supernovae that bombarded Earth with cosmic energy millions of years ago.

An artist's impression of CSIRO's Australian SKA Pathfinder radio telescope finding a fast radio burst and determining its precise location.

The Whirlpool galaxy has been captured in different light wavelengths. On the left is a visible light image. The next image combines visible and infrared light, while the two on the right show different wavelengths of infrared light.

Electrically charged C60 molecules, in which 60 carbon atoms are arranged in a hollow sphere that resembles a soccer ball, was found by the Hubble Space Telescope in the interstellar medium between star systems.

These are magnified galaxies behind large galaxy clusters. The pink halos reveal the gas surrounding the distant galaxies and its structure. The gravitational lensing effect of the clusters multiplies the images of the galaxies.

This artist's illustration shows a blue quasar at the center of a galaxy.

The NICER detector on the International Space Station recorded 22 months of nighttime X-ray data to create this map of the entire sky.

NASA's Spitzer Space Telescope captured this mosaic of the star-forming Cepheus C and Cepheus B regions.

Galaxy NGC 4485 collided with its larger galactic neighbor NGC 4490 millions of years ago, leading to the creation of new stars seen in the right side of the image.

Astronomers developed a mosaic of the distant universe, called the Hubble Legacy Field, that documents 16 years of observations from the Hubble Space Telescope. The image contains 200,000 galaxies that stretch back through 13.3 billion years of time to just 500 million years after the Big Bang.

A ground-based telescope's view of the Large Magellanic Cloud, a neighboring galaxy of our Milky Way. The inset was taken by the Hubble Space Telescope and shows one of the star clusters in the galaxy.

One of the brightest planetary nebulae on the sky and first discovered in 1878, nebula NGC 7027 can be seen toward the constellation of the Swan.

The asteroid 6478 Gault is seen with the NASA/ESA Hubble Space Telescope, showing two narrow, comet-like tails of debris that tell us that the asteroid is slowly undergoing self-destruction. The bright streaks surrounding the asteroid are background stars. The Gault asteroid is located 214 million miles from the Sun, between the orbits of Mars and Jupiter.

The ghostly shell in this image is a supernova, and the glowing trail leading away from it is a pulsar.

Hidden in one of the darkest corners of the Orion constellation, this Cosmic Bat is spreading its hazy wings through interstellar space two thousand light-years away. It is illuminated by the young stars nestled in its coredespite being shrouded by opaque clouds of dust, their bright rays still illuminate the nebula.

In this illustration, several dust rings circle the sun. These rings form when planets' gravities tug dust grains into orbit around the sun. Recently, scientists have detected a dust ring at Mercury's orbit. Others hypothesize the source of Venus' dust ring is a group of never-before-detected co-orbital asteroids.

This is an artist's impression of globular star clusters surrounding the Milky Way.

An artist's impression of life on a planet in orbit around a binary star system, visible as two suns in the sky.

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Astronomers witness 'teenage' years of our universe in explosion - CNN