The Hubble Space Telescope - a project of international cooperation between NASA and ESA (European Space Agency) - is a gift that keeps on giving. Astronomers were using it to find an intermediate-mass black hole at the centre of globular cluster NGC 6397 but instead they found a concentration of small stellar-mass black holes.
The post Podcast Episode 29 l Hubble Discovers A Concentration of Small Black holes Inside Globular Cluster appeared first on 360 On History.