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Inverse
Inverse
Science
Kiona Smith

Astronomers Capture the Space-Squishing Echoes of Merging Supermassive Black Holes

Black Hole NANOGrav Earth

There’s a monster lurking at the center of every galaxy, millions of miles wide and millions of times more massive than our Sun: a supermassive black hole. When two of these cosmic leviathans meet, they fall into a million-year death spiral that ends in a dramatic merger.

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