Black hole born without a bang in neighboring galaxy – study

Scientists say a failed supernova resulted in a quiet transformation of a once-bright massive star

A star in the Andromeda galaxy 13 times the mass of the Sun has quietly turned into a black hole after failing to go supernova, according to a new scientific paper.

Massive stars can become black holes following a supernova, a spectacular cosmic event. At the end of their life cycle, when nuclear fusion in the core can no longer counteract gravity, it collapses.