
Astronomers have spotted two active black holes merging at their farthest distance ever — just 900 million years after the Big Bang.
This is the first time that two luminous supermassive black holes have been spotted during cosmic dawn.

Astronomers have spotted two active black holes merging at their farthest distance ever — just 900 million years after the Big Bang.
This is the first time that two luminous supermassive black holes have been spotted during cosmic dawn.