Supernova - Wikipedia
A supernova (pl.: supernovae or supernovas) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion.
What Is a Supernova? | NASA Space Place – NASA Science for Kids
2024年11月8日 · 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. Image credit: NASA/CXC/M.Weiss. What causes a supernova?
What is a supernova? | Space
2023年6月19日 · According to NASA, supernovas are "the largest explosion that takes place in space." A new supernova called SN 2023ixf has been making headlines since it first burst into view on May 19, 2023,...
NASA’s Webb Stuns With New High-Definition Look at Exploded ...
2023年12月10日 · This high-resolution look unveils intricate details of the expanding shell of material slamming into the gas shed by the star before it exploded. Cas A is one of the most well-studied supernova remnants in all of the cosmos.
James Webb Telescope Captures Image of Supernova That ...
2023年12月13日 · NASA’s James Webb Space Telescope has seen the remains of a supernova explosion in a new light. The remnants, called Cassiopeia A (or Cas A for short), lie 11,000 light-years from Earth, in the...
Supernova | Definition, Types, & Facts | Britannica
2024年11月14日 · supernova, any of a class of violently exploding stars whose luminosity after eruption suddenly increases many millions of times its normal level. The term supernova is derived from nova (Latin: “new”), the name for another type of exploding star. Supernovae resemble novae in several respects.
Predicting the next supernova explosion: New simulations ...
2 天之前 · Recent observational datas have suggested that the famous supernova 1987A may be closely related to a jet explosion, rather than exhibiting the spherical explosion predicted by previous one ...
What is a supernova? - EarthSky
2020年11月12日 · A supernova is the name given to the cataclysmic explosion of a massive star at the end of its life. It can emit more energy in a few seconds than our sun will radiate in its lifetime of...
DOE Explains...Supernovae | Department of Energy
A supernova is the colossal explosion of a star. Scientists have identified several types of supernova. One type, called a “core-collapse” supernova, occurs in the last stage in the life of massive stars that are at least eight times larger than our Sun. As these stars burn the fuel in their cores, they produce heat.
Supernovas & Remnants | Center for Astrophysics | Harvard ...
Monitoring the closest supernova of recent years: the explosion known as Supernova 1987A. This supernova was the explosion of a very massive blue star in a neighboring galaxy, the Large Magellanic Cloud.