How Historic Jupiter Comet Impact Led to Planetary Defense
Twenty-five years ago, humanity first witnessed a collision between a comet and a planet. From July 16 to 22, 1994, enormous pieces of the comet Shoemaker-Levy 9 (SL9), discovered just a year prior, crashed into Jupiter over several days, creating huge, dark scars in the planet's atmosphere and lofting superheated plumes into its stratosphere. The SL9 impact gave scientists the opportunity