Astronomers discovered over 100 stellar-mass black holes in the Milky Way’s Palomar 5 star cluster, located 80,000 light-years from Earth. This cluster, spanning 30,000 light-years, contains some of the galaxy’s oldest stars. Researchers believe these black holes have shaped Palomar 5’s unique structure, offering insights into globular clusters and black hole formation. Palomar 5’s low density and extensive tidal stream suggest black holes stripped away its stellar material. N-body simulations revealed a larger-than-expected black hole population, crucial for understanding tidal stream formation.