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Uma supernova é uma explosão estelar poderosa e luminosa. Este evento astronômico transitório ocorre durante os últimos estágios evolutivos de uma estrela massiva ou quando uma anã branca inicia uma fusão nuclear descontrolada. O objeto original, chamado de progenitor, pode colapsar em uma estrela de nêutrons ou em um buraco negro, podendo ainda ser completamente destruído. O pico de luminosidade óptica de uma supernova pode ser comparável ao de uma galáxia inteira e demora vários meses. #fisica
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