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Bob Berman's strange universe: Missing shadows

February 2007: Shadows have a serious, legitimate place in astronomy.
Shadows. Ordinary shadows. Amazingly enough, they help solve cosmic mysteries — but now they're torturing us with a new one. We're exploring this now, of course, because this month the topic of shadows gets its yearly makeover. It's time for our most bizarre annual ritual, when a rodent with a 4-ounce brain makes meteorological predictions.

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