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What Is a Supernova?
A supernova is a rare, extremely bright exploding star. It suddenly becomes at least a billion times brighter than it was previously. Then it fades away. At its peak, it can outshine a galaxy. Its explosion propels a cloud of gas and dust into space.... More »
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en.wikipedia.org/wiki/Supernova

A supernova is a transient astronomical event that occurs during the last stellar evolutionary stages of a massive star's life, whose dramatic and catastrophic ...

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

Sep 4, 2013 ... A supernova is the explosion of a star -- the largest explosion that takes place in space.

spaceplace.nasa.gov/supernova/en

Aug 15, 2017 ... A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star.

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.

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=QfNqBKAvkpw
Dec 21, 2012 ... Science expert Emerald Robinson explains what a supernova is.To view over 15000 other how-to, DIY, and advice videos on any topic, visit ...

www.esa.int/esaKIDSen/SEMBG13VRRE_OurUniverse_0.html

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 supergiant – a ...

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.commonlit.org/texts/what-is-a-supernova

A supernova happens where there is a change in the core, or center, of a star. A change can occur in two different ways, with both resulting in a supernova.