On July 4, 1054, a supernova explosion occurred, marking the death of a star thought to be nine to 11 times more massive than ...
Several telescopes used to observe the supernova SN Zwicky which was magnified nearly 25 times by a foreground galaxy acting ...
M83 is located about 15 million light-years away from Earth and is forming stars at a high rate. Using 14 years of Chandra data of the galaxy (2000 to 2014), the team caught some surprising variations ...