HomeSpace NewsThis monster black hole is spinning much more slowly than others

This monster black hole is spinning much more slowly than others

Typically, black holes spin really fast — near the speed of light. But astronomers have noticed that one monster black hole is spinning much more slowly than most smaller black holes. 

The finding may reveal clues about how these supermassive black holes form. Located at the center of quasar H1821+643, some 3.4 billion light-years from Earth, this supermassive black hole is between 3 billion and 30 billion solar masses, making it one of the most humongous black holes scientists have ever discovered. (For comparison, Sagittarius A*, the supermassive black hole at the center of the Milky Way, is only about 4 million solar masses.) By analyzing data from NASA’s Chandra X-ray Observatory, the scientists calculated how fast the monster black hole is spinning. 

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