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

Every second, a star explodes somewhere in our vast universe. 🌟 We can watch a supernova in the galaxy NGC 2525 fade away in this video, featuring a time-lapse of photos taken by Hubble over the course of a year! Since supernovae of this type all peak at the same brightness, astronomers can then use that measure of brightness to figure out what the distance of their host galaxies is from Earth. This helps us learn more about the expansion rate of the universe. For more information: https://www.

NASA - National Aeronautics and Space Administration has seen the flash of an exploding star for the first time | Sky News