Scientists may have spotted a black hole that is so enormous, it shouldn’t even exist, although they aren’t quite sure if it even does. The black hole’s mass is 100 times greater than that of the sun.

The potential black hole, which is twice as large as what physicists had believed was possible, was detected by the LIGO and Virgo gravitational-wave detectors at the European Gravitational Observatory.

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A black hole is usually formed when a star collapses after it runs out of fuel, but this only happens when the star’s core is less than 50 times the mass of the Sun, Quanta Magazine explains. Stars with larger masses, between 50-130 times the mass of the Sun, either shed matter until they are small enough, or destroy themselves in a powerful explosion, meaning this new potential black hole defies what scientists understand to be possible.

Black holes that are larger than 130 solar masses can also form when their core’s collapse is too strong to stop. M87* is an example of a black hole that is 6.5 billion times as massive as the Sun.

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Scientists are scratching their heads trying to figure out how this newly spotted potential large black hole came into being. According to Qanta, they suspect that the black hole could be the result of smaller black holes colliding and merging into one gigantic one. They think it is possible that somewhere in a dense area of the universe, a 30 and 50 solar mass black hole could have merged and that the new black hole then combined with another one, which could explain the signals they detected.

The Ligo and Virgo team refused to confirm or deny the rumors about the black hole. It is yet to release any detailed information about its latest observation period, which began in April. It plans to reveal everything by spring 2020, so we will have to wait until then to find out if the black hole even exists, and how it came into being.

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