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 …
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.
What is a supernova? | Space
2023年6月19日 · 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 …
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 …
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 …
Supernovae Information and Facts | National Geographic
3 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 …
NASA’s Webb Telescope Captures Rarely Seen Prelude to Supernova
2023年3月14日 · 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 …
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 …
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 …
The Dawn of a New Era for Supernova 1987a - NASA Science
2017年2月24日 · 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 …