We Just Found the Brightest Supernova Ever Seen

[Dexter]

http://www.popularmechanics.com/space/news/a18979/we-just-found-the-brightest-supernova-ever-seen/

Just how bright is it? If it were within 1,000 light years, the light would affect the ozone layer. If it were 3,000 light years away, it would be brighter than the full moon in the night sky. If it were on the other side of the galaxy entirely but not obscured by dust, it would still be faintly visible in daylight, according to co-author Todd Thompson, a professor in the Department of Astronomy at Ohio State University.