Tycho's Supernova Remnant — In 1572, the Danish astronomer Tycho Brahe observed and studied the explosion of a star that became known as Tycho's supernova. More than four centuries later, Chandra's image of the supernova remnant shows an expanding bubble of multimillion degree debris (green and red) inside a more rapidly moving shell of extremely high energy electrons (filamentary blue). As a huge ball of exploding plasma
Photo Credit: By NASA/CXC/Rutgers/J.Warren & J.Hughes et al. - http://chandra.harvard.edu/photo/2005/tycho/, Public Domain, https://commons.wikimedia.org/w/index.php?curid=6706920