Space is big! Science is cool! Though the center is closed temporarily , we are still passionate about science and space. Stars are kind of like people. They are born, live full lives, and then they die. Stars are giant. Just like a fire, though, stars will eventually burn through their fuel supply.
Take a look ahead at all the major movie releases coming to theaters and streaming this season. See the list. We take a look back at cinematic history and celebrate Asian Pacific American filmmakers and their visionary work. Watch the video.
History of supernova observations
A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star. An illustration of one of the brightest and most energetic supernova explosions ever recorded. This happens when a star at least five times the mass of our sun goes out with a fantastic bang!
Supernova , plural supernovae or supernovas , any of a class of violently exploding stars whose luminosity after eruption suddenly increases many millions of times its normal level. Supernovae resemble novae in several respects. Both are characterized by a tremendous, rapid brightening lasting for a few weeks, followed by a slow dimming. Spectroscopically, they show blue-shifted emission lines, which imply that hot gases are blown outward. But a supernova explosion, unlike a nova outburst, is a cataclysmic event for a star, one that essentially ends its active i. Supernovae explosions release not only tremendous amounts of radio waves and X-rays but also cosmic rays.