Over 2 decades of Chandra X-ray Observatory views of the Crab Nebula and Cassiopeia A have been time-lapsed. The Chandra team explains here. Credit: NASA/CXC/A. Hobart ...

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

"The discovery of this stream highlights how much is still unknown about the life histories of galaxies, how the hidden ...

Comet 12P/Pons-Brooks and Jupiter were seen by NASA's Solar TErrestrial Relations Observatory-A (STEREO-A). Credit: Space.com ...

On December 20th 2021 at 7.37am, the sun rose over the rocky hills on the southeastern horizon at Karahan Tepe. Ten minutes later an upright blade of light appeared on one side of the oversized stone ...

A newly revealed image from the Vera C. Rubin Observatory has exposed a 163,000-light-year-long stream of stars trailing the ...

Rubin Observatory’s first image reveals a vast stellar stream behind galaxy M61, likely formed from a disrupted dwarf galaxy, exposing hidden cosmic structures.

Documents filed this week in a wrongful termination lawsuit allege that plans to build hotels and golf courses in nine Florida state parks, later dropped after a public backlash, “came ...

A solar storm brought a colorful glow to some skies last night, and you’ll get another chance to see it tonight.

When water penetrates rock crevices in permafrost, it transports heat deep underground, where it causes the frozen rock to ...