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10th April 2019
02:41pm BST

A black hole is a body of mass with such a strong gravitational pull that nothing, not even particles or light itself could escape. Which would make photographing it pretty difficult.
"Black holes are objects so massive and so compact that light cannot escape," says Shep Doeleman, director at the Event Horizon Telescope programme and senior research fellow at Smithsonian Astrophysical Observatory. "We think they exist throughout the universe, but we have never seen one."
Here's an explanation from NASA, who are infinitely more qualified to explain it than we are
https://twitter.com/NASA/status/1115957711521439746Explore more on these topics: