Astronomers usually detect black holes by looking for X-rays. When gas and dust fall toward a black hole, they heat up and ...

A strange X-ray beacon from deep space has revived a decades-old mystery and opened a window onto one of the universe’s most ...

Up to 150 Geminid meteors may brighten the night sky each hour as the shower hits its peak on Dec. 13-14, according to the ...

Will the Milky Way and Andromeda galaxies collide in several billion years? The odds have changed with a new study using ...

Black holes, born from dying stars, are cosmic giants that grow by consuming matter and merging with others. While invisible ...