No Supernova Needed. This Star Collapsed Directly Into A Black Hole
Favicon 
www.universetoday.com

No Supernova Needed. This Star Collapsed Directly Into A Black Hole

Theory says that, under the right conditions, massive stars can collapse directly into black holes without exploding as supernovae. But observational evidence of the phenomenon has been hard to get. Now astronomers have found some sequestered in archival data.