 The black hole dubbed BH-1 was discovered by a team of astronomers using the European Space Agency's GAIA satellite which is designed to precisely measure the positions and movements of stars in the Milky Way galaxy. BH-1 is located just 1,560 light-years away from the Earth in the direction of the constellation Ophicus making it the closest black hole ever detected. In addition to BH-1, GAIA also found the second-closest black hole to Earth dubbing it to GAIA of BH-2 which is 3,800 light-years away in the constellation Centurus. Remarkably, scientists said that both black holes are in Earth's cosmic backyard. European Space Agency launched the GAIA mission in 2013 for a comprehensive stellar sensors.