Overview

• Gaia BH3 is the largest known stellar black hole in our galaxy, significantly surpassing the mass of others.
• It was discovered through its gravitational effects on a nearby companion star, which revealed its presence.
• The black hole and its companion star likely originated from a metal-poor progenitor, shedding light on stellar evolution.
• Despite its proximity, Gaia BH3 is dormant, posing no immediate threat to Earth.
• This finding is part of ongoing research that could unveil more such black holes in future Gaia data releases.