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
WEBSep 27, 2024 — A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star.
Supernova | Definition, Types, & Facts | Britannica
WEBSep 20, 2024 — 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...
Supernovae Information and Facts | National Geographic
WEB3 min read. Some stars burn out instead of fading. These stars end their evolutions in massive cosmic explosions known as supernovae. When supernovae explode, they jettison matter into space at...
NASA’s Webb Telescope Captures Rarely Seen Prelude to Supernova
WEBMar 14, 2023 — 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 Telescope in June 2022.
What is a supernova? - EarthSky
WEBNov 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 lifetime of...
Supernovas & Remnants - Harvard–Smithsonian Center for ...
WEBSupernovas 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.
Hubble Captures 3 Faces of Evolving Supernova in Early ...
WEBNov 9, 2022 — Three different moments in a far-off supernova explosion were captured in a single snapshot by NASA’s Hubble Space Telescope. The star exploded more than 11 billion years ago, when the universe was less than a …
The Dawn of a New Era for Supernova 1987a - NASA Science
WEBFeb 24, 2017 — Three decades ago, astronomers spotted one of the brightest exploding stars in more than 400 years. The titanic supernova, called Supernova 1987A (SN 1987A), blazed with the power of 100 million suns for several months following its …