Supernova Pic 1. Remnants of Cassiopeia Supernova A (29 Light Years across). Photo credit: Chandra.harvard.edu Watch the video that gives the summary of this post. Overview Supernova is a violent, explosive death of a very massive star. Nova is from the Latin word “novus” which means new, unusual or extraordinary. In 1572, the Danish… Continue reading Supernovae