Double Black Hole
The behavior of space-time around a black hole becomes extremely complex when considering two merging black holes. Researchers think this type of event is common, occurring when two black holes form near one another or during the collision of two supermassive black holes at the center of two merging galaxies.
This visualization shows two black holes against a simulated dark blue sky background. Below them is a two-dimensional depiction of the fabric of space-time around the black holes.
The black holes spiral around each other, speeding up as they merge, and eventually coming together to form a single black hole. Space-time wobbles during this merger, throwing off waves of gravitational energy that researchers hope to one day detect from Earth.
Video: The Caltech/Cornell SXS Collaboration