Astronomy Picture of the Day

Embraced by Sunlight

Moons at Twilight

Symbiotic R Aquarii

Blue Marble Earth

NGC 4651: The Umbrella Galaxy

Aurora and Light Pillars over Norway

Eta Car: 3D Model of the Most Dangerous Star Known [video]

T Tauri and Hind's Variable Nebula

IC 342: The Hidden Galaxy in Camelopardalis

Aurora by Moonlight

Earth at Night

In the Heart of the Heart Nebula