Tag Archives: 21 million light-years away

Berkeley scientists discover an \’instant cosmic classic\’ supernova

A supernova discovered Thursday is closer to Earth—approximately 21 million light-years away—than any other of its kind in a generation. Astronomers believe they caught the supernova within hours of its explosion, a rare feat made possible with a specialized survey telescope and state-of-the-art computational tools. The finding of such a supernova so early and so […] … learn more→