A citizenscience project is inviting members of the public to help search for hidden blackholes.
Black holes are some of the most mind-bending objects in the universe. They are so dense that anything which passes their event horizon, even light, can’t escape. That’s where they get their name, as the black hole itself is impossible to see. Fortunately for researchers, many black holes have material like dust and gas around them, and when this material falls into a black hole it can give off bursts of X-rays which allow them to locate the black hole.
The project, called Black Hole Hunters, looks for clues to the location of black holes left behind by their enormous gravity. Because black holes are so dense they have very strong gravity, and this strong gravity warps spacetime. This bends light coming from stars behind them, making that light brighter for a short time.
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