Astronomy Picture of the Day

Why are there faint rings around this spiral galaxy?

They are some of the

Why are these people shooting a powerful laser into the center of our Galaxy?

In the center of a swirling whirlpool of hot gas

Young suns still lie

Portuguese navigator

Star clusters, glowing nebulae

Blown by the wind from a massive star, this interstellar

What does Earth look like from the planet Mercury?

The Annotated Galactic Center

Could life once have survived on Mars?

The stars are not alone.

This ominous, dark shape sprawling across the face of the Sun

Do other rich planetary systems exist?

What's the matter with this cluster of galaxies?

Have you ever seen the Milky Way's glow create shadows?

Is this one galaxy or two?