A small world 4.5 times Earth's mass is circling its star in the wrong direction. Normally there's a bully nearby to blame.

The Quad Cities club invites you out to its next public observation night on Oct. 3 in Rock Island's Longview Park.

The Chandra X-ray Observatory (Chandra) and the X-ray Multi-Mirror Mission (XMM-Newton) continue to expand the frontiers of knowledge about high-energy processes in the Universe. These groundbreaking ...

Looking for a sky event this week? Check out our full Sky This Week column. September 12: Dione skims Saturn's pole Blazing ...

Add Yahoo as a preferred source to see more of our stories on Google. Chris Palma, professor of astronomy and astrophysics at Penn State Eberly College of Science, shares the top astronomy events to ...

An old seafaring instrument could help astronauts on ever more far-flung and perilous missions. MOONS, which was built by a team lead from Scotland, has started its work at the Very Large Telescope in ...

See all the winning images of the Astronomy Photographer of the Year competition in 2026 – world's biggest astro imaging ...