Kareem filled me in on the details: At 3,800 light-years away, Gaia BH2 is farther than Gaia BH1. It lies 5 AU from its binary star companion (roughly the distance from the Sun to Jupiter), which ...

which is much lower than for Gaia BH1 and BH2," Kruckow said. "Additionally, Gaia BH3 is associated with a stream of stars, which is believed to be the remnant of a star cluster." While these ...

If a star orbits a black hole, it will appear from a distance to be orbiting empty space. Gaia projects the star’s orbit on a plane in the sky while ground-based telescopes meanwhile track how light ...