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supernova    音标拼音: [s,upɚn'ovə]
n. 超新星

超新星

supernova
n 1: a star that explodes and becomes extremely luminous in the
process


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  • Supernova - Wikipedia
    A supernova (pl : supernovae) 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
    A supernova of a star more than about 10 times the size of our sun may leave behind the densest objects in the universe— black holes The Crab Nebula is the leftover, or remnant, of a massive star in our Milky Way that died 6,500 light-years away
  • Supernova | Definition, Types, Facts | Britannica
    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
  • NASA’s Chandra Observatory spots possible supernova remnant . . .
    If the supernova remnant is confirmed, it would be one of the closest to the supermassive black hole that lies in the center of the Milky Way NASA’s Chandra X-Ray Observatory has captured a
  • 15 Facts About Supernovas: The Universe’s Biggest Explosions
    During a supernova, temperatures and pressures become so extreme that nuclear reactions produce elements heavier than iron This process, known as rapid neutron capture or the r-process, builds atomic nuclei in fractions of a second
  • What Is a Supernova? - Space
    A supernova is what happens when a star has reached the end of its life and explodes in a brilliant burst of light
  • Near-Earth supernova - Wikipedia
    A near-Earth supernova is an explosion resulting from the death of a star that occurs close enough to the Earth, less than roughly 10 to 300 parsecs [33 to 978 light-years] away, [2] to have noticeable effects on its biosphere





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