black holes, gravitational ripples, gravitational waves

The Rare Merger of Unrelated Black Holes

For the first time, astronomers have encountered something exciting from archival data. The data from gravitational ripple observatories showed a merger of two black holes that came far away in space from each other. Interestingly, these two black holes born in different places found a way to merge. But how do they know these two ...

Nathan Machoka

Two merging black holes.