What is a supernova?

supernova is the explosion of a star, possibly caused by gravitational collapse, during which the star's luminosity increases by as much as 20 magnitudes and most of the star's mass is blown away at very high velocity, sometimes leaving behind an extremely dense core.

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I apologize for any confusion. To find information about supernovas, you can try the following methods:

1. Conduct an online search: Use a search engine like Google or Bing to search for "supernova." This will provide you with a list of websites, articles, and resources that explain what a supernova is in more detail.

2. Visit scientific websites: Websites like NASA, ESA (European Space Agency), or popular science websites can provide reliable information about supernovas. Look for articles or sections specifically dedicated to explaining the concept.

3. Read books or scientific literature: Visit your local library or access online databases to find books or scientific papers on astrophysics or astronomy. These resources often contain detailed explanations on the topic of supernovas.

Remember to critically evaluate the sources you find to ensure they provide accurate information from reputable sources, such as scientific institutions or experts in the field.