Gaia mission discovers closest ever black hole duo to Earth.

Two previously unknown black holes, Gaia BH1 and Gaia BH2, have been discovered using data from the European Space Agency's Gaia mission and ground-based telescopes. They are the closest black holes to Earth ever discovered, lying 1,560 and 3,800 light-years away respectively, and are roughly nine to 10 times more massive than our sun. Unlike previous discoveries, these black holes are completely dark and dormant, making them a new category of black hole never seen before. Scientists hope that Gaia's next data release in 2025 will uncover more dormant black holes and shed light on how they formed.