Explore the mysteries of comets, from the clues they carry about our past to the devastating impacts they could unleash if they venture too close to Earth. #ScienceChannel #HowTheUniverseWorks About How the Universe Works: With a cast of experts and eye-popping CGI, we're looking under the celestial hood to tell the greatest story of all -- the story of where we and everything else came from. Subscribe to Science Channel: https://www.youtube.com/@sciencechannel About Science Channel: Learn about outer space, leading scientific exploration, new technology, earth science basics, & more with science videos & news from Science Channel. Find us on social: Facebook: https://www.facebook.com/ScienceChannel/ Twitter: https://twitter.com/sciencechannel Instagram: https://instagram.com/sciencechannel TikTok: https://tiktok.com/@sciencechannel What Would Happen If a Comet Hit Earth? 🌎 ☄️ How the Universe Works | Science Channel https://youtu.be/dV-fABPl_gM