Comet NEOWISE has returned to the skies and is delighting skywatchers. So what makes this comet so special?
Astronomers are buzzing about Comet NEOWISE, which observers under clear, dark skies in the Northern Hemisphere can currently see with the naked eye.
New research re-examining old data showed that 28 objects previously described as distant galaxies or dim black holes are in fact bright, shrouded supermassive black holes.
One of the most important controversies in physics remains unresolved after a major new study. But at least we have a new precise number for the universe's age.
It took just one round of photographs from a new solar science spacecraft for scientists to learn something new about the sun.
New images of the solar surface, the closest ever seen, included a flaw that resembled a tardigrade.
The runaway star is traveling at nearly 600,000 mph and lost most of its mass to a mysterious explosion.
For the first time ever, physicists have spotted rare, ghostly particles, called CNO solar neutrinos, produced by a weird kind of fusion inside the sun.
It turns out the moon is a little younger than scientists previously thought — about 85 million years younger, to be precise.
Physicists are step closer to understanding where the largest black holes in the universe came from. But new data reveals even deeper mysteries around their creation.
An astrophotography competition run by London's Royal Observatory Greenwich, announces a shortlist of exceptional images for its 2020 contest.
A few scant equations can explain a variety of phenomena in our universe, over vast gulfs of space and time. Here's a taste of just how powerful modern physics can be.
From buried cities to sunken ships, clues from the past reveal secrets about people and civilizations dating to many thousands of years ago.
Physicists have discovered a new, exotic kind of tetraquark, made up of four charm quarks. They say it's a major breakthrough.
Why are scientists trying to grow organs at the International Space Station? People live on Earth not in zero-gravity. A stem cell expert explains why it is useful to do these experiments in space.