Scientists have shot two black holes orbiting each other, offering the first ever definitive proof that these intergalactic ...

Stretching roughly 330 million light-years across, the Boötes Void is a staggering bubble of space almost devoid of galaxies — in a region where thousands would normally dwell, only about 60 have been ...

Astronomers have detected the signal of a colossal black hole in deep space that likely formed when two already-large black holes crashed into each other billions of light-years away. The result is a ...