Astronomers Find Evidence of Supernova Just 600 Light-Years from Earth

by Ryan Whitwam

Credit: NASA/JPL/Caltech

Astronomers have found many awe-inspiring objects in the cosmos, but a pair of astronomers 20 years ago found something just plain confusing. They spotted a straight line of ionized gas in the direction of Ursa Major, which was never really explained to everyone’s satisfaction. A new analysis of this line involving astronomers…