Astronomers have made a groundbreaking discovery: a swarm of over 100 stellar-mass black holes is traversing through the Milky Way within the star cluster known as Palomar 5. This extraordinary cluster,

Astrophysicists have uncovered a possible swarm of over 100 stellar-mass black holes hidden within a stellar cluster known as Palomar 5.

In any globular cluster, all its stars formed at the same time, from the same cloud of gas. The Milky Way has around 150 known globular clusters; these objects are excellent tools for studying, for example, the history of the Universe, or the dark matter content of the galaxies they orbit.

In around a billion years, the cluster is expected to dissolve entirely, leaving behind only black holes orbiting the Milky Way's centre.

There's only one thing it could be: a black hole, one with a petite size that's smack bang in the middle of a mysterious void in the data known as the lower mass gap. Named G3425, it might have a lot to teach us about tiny black holes according to an analysis.