Flashes of gravitationally lensed starlight could act as cosmic lighthouses revealing the presence of binary supermassive black holes in close orbit.

Starlight warped in the fabric of spacetime could help us find hidden black holes dancing together

Source: space
Source Link: https://www.space.com/astronomy/black-holes/starlight-warped-in-the-fabric-of-spacetime-could-help-us-find-hidden-black-holes-dancing-together