: Late autumn is an excellent time to observe four of the most variable stars in the sky: Mira, Algol, and Delta Cephei. As their name suggests, variable stars are ones that, for one reason or another, varies in brightness over time.
: Late autumn is an excellent time to observe four of the most variable stars in the sky: Mira, Algol, and Delta Cephei. As their name suggests, variable stars are ones that, for one reason or another, varies in brightness over time.
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