Suzaku Finds "Fossil" Fireballs from Supernovae

Studies of two supernova remnants using the Japan-U.S. Suzaku observatory have revealed never-before-seen embers of the high-temperature fireballs that immediately followed the explosions. Even after thousands of years, gas within these stellar wrecks retain the imprint of temperatures 10,000 times hotter than the sun's surface."This is the first evidence of a new type of supernova remnant -- one