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Glenn Chaple's observing basics: Having an Earth-moving experience

July 2007: Readers share their observations of seeing the Earth's rotation.
It began with an e-mail from Bill Cromwell of Ft. Louden, Pennsylvania, who felt that he could "get in the zone" and sense the apparent westerly drift of the stars with Earth's rotation. I mentioned Bill's observation in a column I wrote about Earth-sky motions in the February issue. The article elicited many responses from readers.

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