A Famous Supernova’s Mysteries Are Still Unraveling Hundreds of Years Later
Look up and you might see the bright constellationCassiopeiatrace a zigzag - zag across the sky as it seemingly always has . But almost 450 twelvemonth ago , it was the source of surprise : A lustrous flash , Tycho ’s supernova , or “ SN 1572″ as scientists call it . This was one of the few supernovae humans have been capable to seewith their naked eye throughout history ....