An excess of 'failed' stars is a bad sign for alien life
There could be 100 billion brown dwarfs in our galaxy, many more than thought.
Early universe 'fireworks' challenge notions of how stars form
The ancient cosmos may have been packed with tiny star incubators.
Milky Way's fastest stars could be runaways from another galaxy
Hypervelocity stars might not come from black holes after all.
Watch the ESA trace 2 million stars' journey across the skies
Our descendants sure won't see the same constellations we do.
Supermassive black hole set a record for longest lunch ever
The feeding frenzy enriches our understanding of the universe.
Magnetic fields could explain an 'erratic' neutron star
Scientists have a theory for Rapid Burster's unusual X-ray blasts.
Rare red nova explosion could add a star to the sky in 2022
A Calvin College astronomer has predicted the stellar event is just a few years away.
Astronomers have found the roundest object in the universe
The star, Kepler 11145123, is the closest celestial body to a perfect sphere we've ever observed.
President Obama calls for a plan to deal with extreme space weather
The risk is more real than you might think.