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A supernova is the explosion of a massive star. Supernovae are extremely bright and create a huge burst of radiation.
Supernovae occur either when the mass of a star's core exceeds the sustainable limit or when nuclear fusion produces more energy than the star can contain. More >>

en.wikipedia.org/wiki/Supernova

A supernova/ˌsuːpərnoʊvə/ plural: supernovae /ˌsuːpərnoʊviː/ or supernovas, abbreviations: SN and SNe) is an astronomical event that occurs during the ...

www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-a-supernova.html

A supernova is the explosion of a star -- the largest explosion that takes place in space.

www.space.com/6638-supernova.html

Jan 27, 2014 ... This Chandra X-ray photograph shows Cassiopeia A (Cas A, for short), the youngest supernova remnant in the Milky Way.

wonderopolis.org/wonder/what-is-a-supernova

Supernovae (the plural of supernova) can become billions of times brighter than the Sun. A supernova explosion releases billions of tiny particles called atoms ...

www.nationalgeographic.com/science/space/universe/supernovae

This 1991 image shows a small portion of the Cygnus Loop supernova remnant. The formation shown here marks the outer edge of an expanding blast wave ...

www.ask.com/youtube?q=What+Is+a+Supernova%3F&v=iNPikOAYonM
Oct 14, 2012 ... A short video made for my physics assignment about supernovas. West Island School Year 11 Oct 14 2012 Credits Music: Finale - Madeon ...
www.ask.com/youtube?q=What+Is+a+Supernova%3F&v=oKXVmzod-TE
Apr 23, 2013 ... New measurement of the burst's host galaxy suggest it represents the supernova of a huge star hundreds of times larger than the sun. Credit: ...

www.esa.int/esaKIDSen/SEMBG13VRRE_OurUniverse_0.html

Jun 8, 2017 ... Every now and again our Milky Way galaxy is lit up by a huge explosion. Known as a supernova, this violent event marks the death of a ...

hubblesite.org/reference_desk/faq/answer.php.id=30&cat=stars

A supernova is the explosive death of a star, which unleashes a burst of light through the cosmos. Supernovas happen in two different ways: When massive stars ...