What caused a large extinction and rebirth of life?

How do you make big galaxies? Start with a bunch of small ones…

A San Francisco researcher is looking for life not so far away.

The stuff of asteroids is hiding on other asteroids!

Two distant stars may soon merge, creating a luminous red nova and possibly quite a show!

Moon samples from one of the Apollo missions in the 1970s date the Moon's formation farther back.

Astronomers offer a new scenario on the origin of the Moon.

What does a star's chemistry tell us about the habitability of the planets orbiting it?

Astronomers are getting closer to solving the origins of Fast Radio Bursts, or FRBs.

Get ready for this year's solar eclipse. For more information, visit eclipse.aas.org