The supernova was the death of a red supergiant star 500 times larger than the sun, in a galaxy just 22 million light-years away.

Scientists watch supernova shockwave shoot through a dying star for 1st time

Source: space
Source Link: https://www.space.com/astronomy/scientists-watch-supernova-shockwave-shoot-through-a-dying-star-for-1st-time