Gaia BH3

Black Hole

The most massive stellar black hole known in the Milky Way, orbited by an ancient metal-poor star that helped reveal its presence.

Facts

TypeBlack Hole
Black hole typeStellar
Distance from Earth1,930 ly
Diameter195 km
Mass6.56 × 10^31 kg
Redshift0
Discovered2024

Gaia BH3 in context

Its mass is 33 times the mass of the Sun.

The light reaching us from Gaia BH3 tonight left it around 1,926 years ago.

Of the 15 black holes these pages cover, only 1 lie closer to us.

It has been on record since 2024.

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