Astronomers have never detected mid-infrared flares from our galaxy's supermassive black hole—until now.
The Event Horizon Telescope's famous image of Sagittarius A* may depict an artifact, raising questions about the black hole's true structure.
NASA selected two space observatory proposals for additional review, and one is expected to be cleared for a 2032 launch.
The newly identified three-body system has a problem, and it’s not aliens—it’s that in about 20 million years, the stars are expected to merge and explode.
The jets of material that spew from black holes catalyze stellar eruptions, surprising astronomers and raising questions about the jets' role in the universe.
Nuclear devices generate massive amounts of X-rays. A new experiment suggests that might be enough to divert a killer asteroid.
Galaxies usually become chaotic when they run out of star-making fuel, but this one is going out surprisingly quietly.
Even if the one-in-a-billion situation were to happen, it wouldn't spell the end of humanity. Probably.
At just 300 light years apart, it's the closest duo yet discovered.
Data from the James Webb Space Telescope indicates Psyche could be covered in water and a chemical that combines with iron to form rust.
Signatures of hydrogen in spectrograms hint at places in the universe where new physics might lurk.
The galactic cores, containing huge black holes, could help explain how the universe developed into the complex cosmos it is today.
The animation, which simulates the view of someone falling into a black hole, demonstrates how the bizarre objects warp light and space as you approach them.
The black hole lurks just 2,000 light-years away in the constellation Aquila.
New helium measurements in distant galaxies could provide solutions to a long-standing cosmology problem, potentially explaining why the universe isn't empty.
A team of researchers suggests the space observatory just spotted "dark stars"—theoretical stellar objects powered by dark matter.
The astounding outburst came from a galaxy 2 billion light-years away. It's the "BOAT"—the brightest of all time.
The space observatory saw three galaxy clusters coming together to form a megacluster.
The jet is from the most distant tidal disruption event yet observed.
They're some of the densest objects in the universe, with nutty internal physics
