Where else might life exist?

How far can you see?

While hunting for comets in the skies above 18th century France, astronomer Charles Messier diligently kept a list of the things he encountered that were definitely not comets.

Massive stars spend their brief lives furiously burning nuclear fuel.

Over 4000 planets are now known to exist outside our Solar System.

What's the magnetic field like in the center of our Milky Way Galaxy?

What's the magnetic field like in the center of our Milky Way Galaxy?

The dust sculptures of the Eagle Nebula are evaporating. As powerful starlight whittles away these cool cosmic mountains, the statuesque pillars that remain might be imagined as mythical beasts.

Not a Falcon 9 rocket launch after sunset, the Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky.

On October 10, a new telescope reflected the light of the setting Sun.