Hubble Telescope Helps Unearth Bevy of Small Black Holes Inside Globular Cluster

Located some 7,800 light-years away in the Ara constellation, NGC 6397 is considered one of the two globular clusters closest to Earth. As a result of its dense nucleus, it is also known as a core-collapsed cluster.

Hubble Telescope Helps Unearth Bevy of Small Black Holes Inside Globular Cluster
Located some 7,800 light-years away in the Ara constellation, NGC 6397 is considered one of the two globular clusters closest to Earth. As a result of its dense nucleus, it is also known as a core-collapsed cluster.