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1. Dictionary

   Su·per·no·va

   /ˈso͞opərˌnōvə/

   

   noun

   • 1. a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.

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2. www.merriam-webster.com › dictionary › supernovaSupernova Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › supernova

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   1. : the explosion of a star in which the star may reach a maximum intrinsic luminosity one billion times that of the sun. 2. : one that explodes into prominence or popularity. also : superstar.

3. en.wikipedia.org › wiki › SupernovaSupernova - Wikipedia

   en.wikipedia.org › wiki › Supernova

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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.

4. spaceplace.nasa.gov › supernova › enWhat Is a Supernova? | NASA Space Place – NASA Science for Kids

   spaceplace.nasa.gov › supernova › en

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   Jun 13, 2024 · A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star.

5. www.britannica.com › science › supernovaSupernova | Definition, Types, & Facts | Britannica

   www.britannica.com › science › supernova

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   Jun 15, 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.

6. www.dictionary.com › browse › supernovaSUPERNOVA Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › supernova

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   a star that explodes catastrophically owing to either instabilities following the exhaustion of its nuclear fuel or gravitational collapse following the accretion of matter from an orbiting companion star, becoming for a few days up to one hundred million times brighter than the sun.

7. earthsky.org › astronomy-essentials › definition-what-is-a-supernovaWhat is a supernova? - EarthSky

   earthsky.org › astronomy-essentials › definition-what-is-a-supernova

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   Nov 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...

8. www.space.com › 6638-supernovaWhat is a supernova? | Space

   www.space.com › 6638-supernova

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   Jun 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...

9. www.dictionary.com › browse › super-novaSUPERNOVA Definition & Usage Examples | Dictionary.com

   www.dictionary.com › browse › super-nova

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   The expanding shell of debris (the supernova remnant) creates a nebula that radiates radio waves, X-rays, and light, for hundreds or thousands of years: Compare nova

10. dictionary.cambridge.org › dictionary › englishSUPERNOVA | English meaning - Cambridge Dictionary

    dictionary.cambridge.org › dictionary › english

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    SUPERNOVA definition: 1. a star that has exploded, strongly increasing its brightness for a few months 2. a star that has…. Learn more.

11. dictionary.cambridge.org › us › dictionarySUPERNOVA | definition in the Cambridge English Dictionary

    dictionary.cambridge.org › us › dictionary

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    SUPERNOVA meaning: 1. a star that has exploded, strongly increasing its brightness for a few months 2. a star that has…. Learn more.