The black holes, Gaia BH1 and Gaia BH2, are respectively located just 1,560 light-years away from us in the direction of the constellation Ophiuchus and 3,800 light-years away in the constellation Centaurus. In galactic terms, these black holes reside in our cosmic backyard, the ESA said in a statement. European Space Agency’s Gaia Spacecraft Finds Closest Ever Two New Black Holes to Earth.