Science Trio of supermassive black holes could be rippling fabric of space-time

Scientists have found three supermassive black holes crowded into the same neighborhood. It's a rare sight that tests Einstein's theories and could lead to one of the black holes being hurled into intergalactic space.

By , Staff writer

Researchers have uncovered a rarely seen gathering of three supermassive black holes in a pair of merging galaxies more than 4 billion light-years away.