Living on the Edge • Supernova Bubble Shock Front Expands in New Hubble Time-Lapse Movie 12.10.23 Video zooms into the Cygnus Loop Supernova Remnant, revealing the orange shock front, a long, thin, twisted ribbon of orange gas and dust stretches from left to right across the image. Hubble recorded nearly 20 years of shock movement. [Video Credit: NASA's Hubble Space Telescope, ESA, STScl] • Though a doomed star exploded some 20,000 years ago, its tattered remnants continue racing into space at b