A supernova is an astronomical event that occurs during the last stellar
evolutionary stages of a massive star's life, whose dramatic and catastrophic
destruction is marked by one final titanic ...
A supernova is the explosion of a star -- the largest explosion that takes place in
Apr 23, 2013 ... GRB 101225A, aka the 'Christmas burst,' was an strangely long-lasting gamma-
ray burst. The distance was not measured; astronomers ...
Jan 27, 2014 ... When stars can't handle their nuclear fuel, they explode in a brilliant burst of light.
A supernova is an explosion of a massive supergiant star. It may shine with the
brightness of 10 billion suns! The total energy output may be 10<sup>44</sup> joules, ...
Some stars behave as if it's better to burn out than to fade away. These stars end
their evolutions in massive cosmic explosions known as supernovae.
This energy blows the outer layers of the star off into space in a giant explosion
called a supernova (plural: supernovae.) The ball of neutrons left behind is called
Cassiopeia A supernova explosion (artist's impression)
Jan 14, 2016 ... Astronomers have seen what could be the most powerful supernova yet ...
Researchers think the explosion and ongoing activity have been ...
Apr 22, 2016 ... A couple of weeks ago, researchers discovered radioactive debris from a series
of massive supernova explosions at the bottom of our largest ...