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RU Virginis

The Mira variables exhibit some of the most dramatic behavior of all variable stars. For just that reason, they were among the earliest variable stars discovered and followed by astronomers trying to understand how our universe works. Four centuries after their discovery, the Mira variables remain one of the most challenging variable star classes to understand. All Miras are dying stars, soon to shed most of their mass, leaving only a white dwarf behind.

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