Astronomy Picture of the Day

A Rocket Debris Cloud Drifts

Atmospheres Detected for Two Extrasolar Planets

Stars, Dust and Nebula in NGC 2170

Rosetta Over Mars

Solar Eclipse from the Moon

Lunar Transit from STEREO

Triton: Neptune's Largest Moon

Illusion and Evolution in Galaxy Cluster Abell 2667

Saturn from Above

New Horizons Spacecraft Passes Jupiter

Eclipsed Moon and Stars

Eclipse and Ecliptic