Astronomy Picture of the Day

Black Holes in Merging Galaxies

The Galactic Center in Infrared from 2MASS

Moons and Rings Before Saturn

WISE: Heart and Soul Nebulas in Infrared

A Twisted Meteor Trail Over Tenerife

Jupiter from the Stratosphere

Hubble Remix: Active Galaxy NGC 1275

Thor's Helmet

Lunokhod: Reflections on a Moon Robot

Comet McNaught Becoming Visible to the Unaided Eye

Orange Sun Simmering