The object, named NGC 6099 HLX-1, first appeared in 2009. Chandra caught the bright X-ray flash near the galaxy’s outskirts.

U.S. National Science Foundation NOIRLab astronomers, using data from the James Webb Space Telescope and the Chandra X-ray ...

Radio astronomers like a bit of peace and quiet, so they're sending an historic first radio telescope to the Moon. To block ...

Astronomers may have found a rare intermediate-mass black hole outside galaxy NGC 6099—offering clues about how bigger black holes form.

The first half of 2025 has given us some major contenders, but we still have to play Ghost of Yotei, The Outer Worlds 2, and ...

A red supergiant star is surrounded by a sphere of dust and gas so large there is no known explanation for what produced it ...

Earlier this year, astronomers reported possible evidence of life on another planet – but new observations from JWST suggest the apparent biosignature isn’t there after all ...