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 ...

Asteroid 44 Nysa may be just past opposition, but it’s still placed perfectly for evening viewing in Cancer the Crab. Wait until a few hours after sunset, when Cancer is high in the eastern sky, and ...

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.

Mercury, Venus, and Saturn put on an early-evening display in the west, while Jupiter dominates the rest of the night. Jupiter features many events involving its four major moons that are well worth ...

When NASA’s OSIRIS-REx mission brought back samples from asteroid 101955 Bennu, researchers found that they contained amino acids, the building blocks necessary for life. Amino acids are the molecules ...

Visible in Scorpius before dawn, our waning satellite is close to the 3rd-magnitude star Pi (π) Scorpii and less than 8° from Antares, the Scorpion’s bright red heart. The Moon will pass 0.7° south of ...

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 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 ...

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 ...

I will assume you’re referring to what would happen if Earth stopped rotating all at once, without any gradual reduction in velocity. In that event, most things on Earth would be almost immediately ...