A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star. One type of supernova is caused by the “last hurrah” of a dying massive star. This happens when a star at least five times the mass of our sun goes out with a fantastic bang! Massive stars burn huge amounts of nuclear fuel at their cores, or centers. This produces tons of energy, so the center gets very hot. Heat generates pressure, and the pressure created by

Are we in danger of a supernova exploding too close to Earth? #CosmoKnowledge #Space #Science #Astronomy #Universe #Astrophysics #Education #Galaxy #Cosmos #supernova #pulsars #velasupernova #supernovaexplosion #earth #impact | Cosmoknowledge

Ever wonder what happens in the aftermath of a supernova? In this video, you’re watching the glowing remnants of a stellar explosion 17,000 light-years from Earth disperse over a period of 25 years, making this Chandra X-ray Observatory’s longest-spanning video ever released. https://go.nasa.gov/3NaO7bO | NASA - National Aeronautics and Space Administration