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NASA's Spitzer Space Telescope

Cosmology Standard Candle Not So Standard After All

12 Jan 2011, 00:00 UTC
Cosmology Standard Candle Not So Standard After All

Astronomers have turned up the first direct proof that "standard candles" used to illuminate the size of the universe, termed Cepheids, shrink in mass, making them not quite as standard as once thought.

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