Supernova - Wikipedia
The word supernova has the plural form supernovae (/-v iː /) or supernovas and is often abbreviated as SN or SNe. It is derived from the Latin word nova, meaning ' new ', which refers to what appears to be a temporary new bright star.Adding the prefix "super-" distinguishes supernovae from ordinary novae, which are far less luminous. The word supernova was …
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.
Supernova | Definition, Types, & Facts | Britannica
2025年1月17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.
What Is a Supernova? | NASA Space Place – NASA Science for Kids
2025年1月14日 · A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star.
What is a supernova? | Space
2023年6月19日 · Supernovas can briefly outshine entire galaxies and radiate more energy than our sun will in its entire lifetime. They're also the primary source of heavy elements in the universe. According to...
Supernovae Information and Facts | National Geographic
These stars end their evolutions in massive cosmic explosions known as supernovae. When supernovae explode, they jettison matter into space at some 9,000 to 25,000 miles (15,000 to 40,000...
Supernovas & Remnants - Harvard–Smithsonian Center for …
Supernovas are some of the brightest events in the universe, occasionally outshining entire galaxies at their peak. Many supernovas can be seen from billions of light-years away, and nearby supernovas in past centuries have been visible during the daytime.
Supernova - Type I, Stellar Death, Explosion | Britannica
2025年1月17日 · Type Ia supernovae are useful probes of the structure of the universe, since they all have the same luminosity. By measuring the apparent brightness of these objects, one also measures the expansion rate of the universe and that rate’s variation with time.
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...
JWST Photos Reveal Bizarre Physics of Supernova Explosions
3 天之前 · Cassiopeia A is the aftermath of the closest known young supernova to Earth, a blast that occurred some 350 years ago. Recent data from the James Webb Space Telescope (JWST) combine in this image ...
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