Astronomy Picture of the Day

Doomed Star Eta Carinae

Reflections on vdB 9

NGC 4565: Galaxy on Edge

The Stars of the Triangulum Galaxy

The Expanding Echoes of Supernova 1987A [video]

Red Sprite Lightning over Kununurra

Simulation TNG50: A Galaxy Cluster Forms [video]

Magnetic Orion

Sharpest Ultima Thule

A Charioteer's Comet

NGC 6302: The Butterfly Nebula

The Orion Bullets