This Star Just Won't Stop Exploding!

The video discusses the recurrent nova 12A in the Andromeda galaxy, a rare phenomenon that repeatedly brightens and fades. Unlike typical novas, 12A erupts annually due to its massive white dwarf, which rapidly accumulates hydrogen from its companion star. This process may eventually lead to a type 1A supernova, providing valuable insights into these standard candles used for measuring cosmic distances. Although 12A's supernova is expected in 40,000 years, studying it now can enhance our understanding of stellar evolution and the universe's structure.

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