Spotted: a black hole from another galaxy
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Hidden black hole found in extragalactic star cluster

Stellar detection method used to find a black hole outside of our galaxy for the first time.

Artist's illustration showing a black hole from another galaxy, with many bright yellow and blue stars around it, plus one big blue star next to it
This artist’s impression shows a compact black hole 11 times as massive as the Sun and the five-solar-mass star orbiting it. Credit: ESO/M. Kornmesser
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