What is the lowest estimate cited for the annual rate of supernova explosions in the Milky Way?
Answer
Two per century
Determining the precise rate of supernovae in the Milky Way yields wide variations, but the text highlights a specific lower estimate established by astronomical calculations. This lower bound suggests that across the entire galaxy, only about two supernova explosions occur within a hundred-year period. This figure translates roughly to an event happening once every 50 years, placing it at the minimum expected frequency based on current observational limitations and theoretical modeling. This low estimate contrasts sharply with upper estimates that suggest figures nearly 2,400 times higher.
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How Common Are Novae? - Physics Frontier - YouTube
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