can anyone tell about supernova?
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A supernova is a powerful and luminous stellar explosion. At its peak brightness, the optical luminosity of a supernova can be comparable to that of an entire galaxy, before fading over several weeks or months.
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Answer: A supernova is a powerful and luminous stellar explosion. At its peak brightness, the optical luminosity of a supernova can be comparable to that of an entire galaxy, before fading over several weeks or months. A supernova is a transient astronomical event, occurring during the last evolutionary stages of a massive star or when a white dwarf is triggered into runaway nuclear fusion.
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