Black hole record holder

The smallest known black hole, according to this Space.com article, is just 24km wide and a little bit less than 4 times the mass of our sun.

black hole & companion

This sets a record for smallest black hole and will prompt scientists to revisit the theories about the conditions required for the formation of these objects from regular stars.

Of course, the methods used to find an object that doesn’t emit or reflect light, let alone studying the object, are pretty clever. The trick is to look for the effects the black hole is having on other nearby stellar objects.

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