‘Runway’ black hole the size of 20 million suns found speeding through space with a trail of newborn stars behind it

Astronomers have discovered a runaway supermassive black hole, apparently ejected from its home galaxy and hurtling through space with a chain of stars in its wake.

According to the team’s research, which was published on the pre-print server arXiv.org (opens in a new tab) and has been accepted for publication in The Astrophysical Journal Letters, the discovery provides the first observational evidence that supermassive black holes can be ejected from their home galaxies to roam interstellar space.

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