Extraterrestrial opal discovered in Antarctic meteorite

Who needs fireworks when you have the stars?

Our galaxy is teeming with 'stealth' black holes

Astronauts go underground to train for space

This beautiful equation might be one of the keys to understanding nature

10 amazing images of Jupiter

Massive black holes could be far more numerous than previously thought

Fermi paradox solved? Aliens won't contact us for 1,500 more years, says student

Earth has captured a second moon, says NASA

Twisty molecules with 'handedness' that are essential to life found in deep space

5 encouraging signs we're going to Mars

The Milky Way isn't as massive as we thought