Type II supernova

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What Wikipedia says

A Type II supernova or SNII (plural: supernovae) results from the violent explosion of a massive star following the rapid collapse of its core. A star's mass must be at least 8 times, but no more than 40 to 50 times, the mass of the Sun (M☉) to undergo this type of explosion.

Excerpt from the Wikipedia article “Type II supernova”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: NASA, ESA, P. Challis, and R. Kirshner (Harvard-Smithsonian Center for Astrophysics), Public domain, via Wikimedia Commons.