Astronomy Picture of the Day

Bright young stars sometimes sculpt picturesque dust mountains soon after being born.

How did these layers of red cliffs form on Mars?

This is what the

On September 29, this magnificent eruptive solar

Young suns still lie

This dusty island universe is one of the brightest spiral

The planet Mercury has been known since history has been recorded, but parts of the Solar System's innermost planet have never been seen like this before.

A new chapter in space flight began on 1950 July with the

Can you spot the Solar System's four