Astronomy news, features and articles

Astronomers have used a novel technique to find evidence of a secret "buddy" star orbiting Betelgeuse, one of the brightest objects in the night sky — but this sun-size companion may not survive for long.

Detailed photos from the newly operational Vera C. Rubin Observatory have revealed that the recently discovered interstellar object 3I/ATLAS is roughly 7 miles wide, making it the largest of its kind ever seen.

A massive doomed exoplanet on a death spiral toward its parent star has three possible catastrophic fates.

Scientists have found that Uranus emits its own internal heat, contradicting data from NASA's Voyager 2 probe nearly four decades ago.

A large lunar crater featured in the iconic 'Earthrise' photo has just helped the European JUICE spacecraft hone its alien-hunting instruments during a once-in-a-lifetime flyby.

Up to 200 worlds investigated by NASA's exoplanet-hunting TESS satellite could be bigger than predicted, a finding that could impact our search for alien life.

A vast network of inverted channels, formed of sediment laid by ancient rivers, implies Mars was once a much rainier place than we thought.

Half a dozen fragments of the moon may briefly orbit Earth at any given time, before moving on to circle the sun, new research suggests.

Using data from the James Webb Space Telescope, astronomers have discovered dormant galaxies with a wide range of masses in the first billion years after the Big Bang, moving one step closer to understanding how early galaxies grow.