@quirkscience: How many black holes are in the Milky Way? Maybe 100 million, and we've confirmed only about two dozen. Most are loners we can't see: about 9 in 10 of all black holes have no partner star. Follow for more! Sources: NASA, ESA/Hubble, Sahu et al. 2025, Wagg et al. 2026, Olejak et al. 2020. #Science #space #blackhole #milkyway #Astronomy #learnontiktok #quirkscience