Researchers have created digital copies of our galaxy, the Milky Way, to better understand one of the Universe's greatest mysteries: dark matter. These virtual twins are the result of the ...

Very massive stars are cosmic "rock stars" that live fast, die young and leave black holes in their place. During this ...

How astronomers used gravitational lensing, a space-time trick predicted by Einstein, to detect a black hole measuring 30 billion times the mass of the sun.