The black holes, which share the name PKS 2131-021, are locked in a dance of doom about 9 billion light-years from Earth(..)
About 10,000 years from now, the two black holes will merge, sending gravitational waves — ripples in the fabric of space-time originally predicted by Albert Einstein — surging across the universe, the researchers said.
If they are 9 billion light-years from Earth, then it takes 9 billion years for the light to get to us. So what we are seeing now happened 9 billion years ago.
If they are 9 billion light-years from Earth, then it takes 9 billion years for the light to get to us. So what we are seeing now happened 9 billion years ago.
Pack it up pedes, this thread is over