A new study shows that the event that wiped out the dinosaurs caused only a small drop in shark and ray species at the same ...

This faraway, ancient ball of stars may have been captured from another galaxy that passed too close to the Milky Way.

Earth and Mars are constantly moving, but don’t stay a constant distance apart. Plus, spacecraft don’t travel in a straight line to their destination.

On Tuesday, February 17, an annular eclipse of the Sun will occur. Here’s the catch, though: It will only be visible as annular along a thin line in Antarctica. From the southern tips of Chile and ...

Though NASA was optimistic about launching four astronauts on a trip around the moon as early as Friday, the space agency is now looking at March after complications during a key preflight test. As it ...

The bright star Sirius dominates the southern sky late this evening, blazing high in the south around 10 P.M. local time. You can use this sparkling star to point your way to the open cluster M47 in ...

Last Quarter Moon occurs at 7:43 A.M. EST on Monday, February 9. This phase is best viewed in the early-morning hours; early risers can catch it before dawn, and our satellite remains visible in the ...

With the waning Moon rising later and later, there’s a dark window between sunset and moonrise to get in some deep-sky observing. Tonight we’re seeking out M106, a great galaxy to observe with your ...

A few days ago, longtime Astronomy magazine contributor Chris Schur sent me the image you see here. It shows the famous Double Cluster in Perseus, also known as NGC 869 and NGC 884. Most images of ...

A newly discovered comet has astronomers excited, with the potential to be a spectacular sight in early April. C/2026 A1 (MAPS) was spotted by a team of four amateur astronomers with a remotely ...