Blip in night sky tells story of cosmic catastrophe
Monday, January 30, 2012 - 08:04
in Astronomy & Space
(PhysOrg.com) -- NASAs Astronomy Picture of the Day, taken by Adam Block of the UAs Mt. Lemmon SkyCenter, shows the aftermath of a stellar explosion that happened 25 million years ago in an odd-shaped galaxy that may have merged with a second galaxy.