Two supermassive black holes spotted circling inside a remote 'fossil' galaxy are the heaviest, and the closest, black hole binary ever found.
Astronomers find heaviest black hole pair in the universe, and they’ve been trapped in an endless duel for 3 billion years : Read more
Astronomers find heaviest black hole pair in the universe, and they’ve been trapped in an endless duel for 3 billion years : Read more