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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.
Nov 8, 2024 · A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star.
Jun 19, 2023 · A supernova is the explosion of a massive star. There are many different types of supernovae, but they can be broadly separated into two main types: thermonuclear runaway or...
6 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.
Nov 12, 2020 · A supernova is a star's colossal explosion at the end of its life, which can outshine its entire galaxy. Read about causes and types of supernovae here.
Jan 10, 2023 · As the core collapses, the outer layers are blasted outwards in a supernova, the biggest explosion known to occur in the Universe. At its peak, a supernova can be brighter than an entire galaxy and can reach a diameter several light-years across.
May 14, 2023 · Put simply, a supernova is a powerful explosion that occurs during the last evolutionary stages of a massive star – or when a smaller star is triggered into runaway nuclear fusion. Supernovas...
When supernovae explode, they jettison matter into space at some 9,000 to 25,000 miles (15,000 to 40,000 kilometers) per second. These blasts produce much of the material in the...
Nov 8, 2023 · Differences in progenitor stars and the mechanisms of their explosions produce different types of supernovae, with each leaving behind a unique spectral fingerprint.
Feb 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 discovery on Feb. 23, 1987.
