This pair of merging black holes is the closest to Earth we've ever found

astronomers have revealed the closest pair of supermassive black holes to Earth ever observed. The two objects also have a much smaller separation than any other previously spotted pair of supermassive black holes and will eventually merge into one giant black hole.

Earth's earliest water may have come from solar wind and space rocks

Very Large Telescope uncovers closest pair of supermassive black holes yet