Astronomy Picture of the Day

Lenticular Clouds over Mount Etna

Animation: Spiral Disk around a Black Hole [video]

The Orion You Can Almost See

Nearby Spiral Galaxy NGC 4945

NGC 1499: The California Nebula

Millions of Stars in Omega Centauri

Leaving Earth [video]

NGC 2170: Angel Nebula Still Life

Dark Dust and Colorful Clouds near Antares

Messier 61 Close Up

M27: Not a Comet

Spitzer's Orion