Two black holes orbiting one another eventually will merge. A team of researchers from Purdue University and other institutions have discovered a supermassive black hole binary system, one of only two known such systems. The two black holes, which orbit each other, likely weigh 100 million suns each. One of the black holes powers a massive jet that moves outward at very close to the speed of light. The system is so far away that the visible light seen today was emitted 8.8 billion years ago.
The two are only between 200 AU and 2,000 AU apart (one AU is the di...
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