Supernova - Wikipedia
WebA 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
WebApr 22, 2024 · 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?
Supernova | Definition, Types, & Facts | Britannica
Web4 days ago · 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? | Space
WebJun 19, 2023 · A supernova is what happens when a star has reached the end of its life and explodes in a brilliant burst of light. Supernovas can briefly outshine entire galaxies and radiate more energy than...
What is a supernova? - EarthSky
WebNovember 12, 2020. 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...
Supernovae Information and Facts | National Geographic
WebSupernovae. Learn more about what happens when stars explode. 3 min read. Some stars burn out instead of fading. These stars end their evolutions in massive cosmic explosions known as...
The different types of supernovae - Astronomy Magazine
WebNov 8, 2023 · Type I supernovae are primarily characterized by a lack of hydrogen present in their spectra. But the stars that create the various flavors of type I supernovae aren’t all the same. Type Ia ...
Supernovas & Remnants | Center for Astrophysics | Harvard
WebSupernovas & Remnants. 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.
The (Brief) Diary of a Supernova - The New York Times
WebApr 14, 2023 · Supernova explosions are among the rarest and most cataclysmic events in the universe. This one begins as a bright dot just above the arc of the galaxy. Almost a year later, Earth time, the...
NASA’s Webb Telescope Captures Rarely Seen Prelude to Supernova
WebMar 14, 2023 · 4 min read. NASA’s Webb Telescope Captures Rarely Seen Prelude to Supernova. NASA Webb Telescope Team. Mar 14, 2023. Article. The rare sight of a Wolf-Rayet star – among the most luminous, most massive, and most briefly detectable stars known – was one of the first observations made by NASA’s James Webb Space …
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