Astronomy Picture of the Day

Water Discovered in Moon Shadow

Leonid over Mono Lake

Meteor between the Clouds

NGC 253: Dusty Island Universe

Light Echoes from V838 Mon

Crescent Earth from the Departing Rosetta Spacecraft

Cassini Flyby Shows Enceladus Venting

All-Sky Milky Way Panorama

M78 Wide Field

The Jets of NGC 1097

Annapurna Star Trails

Ancient Layered Hills on Mars