Lord Martin Rees tells us about black holes and existential risks.

An astrophysicist looks into the future and the distance.

A new model—“The Big Splat”—explains the strange asymmetry of the moon.

“Astronomy is almost nothing but the story of light.”

Scientists are blocking out the light of distant suns to look for life.

One astronomer has taken to U.S. National Parks to rekindle an old romance.