Some are active, feeding on massive amounts of surrounding matter—sometimes as much as several suns per year. While most of ...

Astronomers witnessed two galaxies engaged in an intense deep-space battle for the first time. Watch the “cosmic joust” in ...

Astronomers watched as a galaxy with the forgettable name SDSS1335+0728 suddenly sprang to life when its massive black hole ...

Dark matter is more than five times as abundant as all the visible matter in the universe. So why can't we see any of it?

The Army has announced the future of air assault: the MV-75, designed to sweep into battle at more than 320 mph, skimming ...

Besides particles like sterile neutrinos, axions and weakly interacting massive particles (WIMPs), a leading candidate for ...

Explosions typically connected to black holes and dying stars may happen right in our planet's atmosphere, too.

Some stars streaking through the Milky Way at millions of kilometers per hour probably trace back to a supermassive black ...

Right field has long been a land of platoon bats, repositioned infielders and patchwork free-agent signings for Cleveland.

NTNU researchers may have found the answer to one of the big, unanswered questions in physics. The universe is full of ...

It's a fairway that is still too little used, but that is finally starting to come to life. In Detroit, an American city with ...