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Cepheid variables

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Explore the 10 most accurate ways to measure star distances in this comprehensive hub—covering parallax, astrometry, Cepheid variables, RR Lyrae, spectroscopic parallax, redshift, VLBI, eclipsing binaries and more. Each concise summary links to in-depth posts that explain how each technique works, its typical accuracy and range, required instruments, and real-world use cases.