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Putting the Stars in Their Places

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Science  19 Nov 2004:
Vol. 306, Issue 5700, pp. 1312
DOI: 10.1126/science.306.5700.1312

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Summary

Europe's Hipparcos set out to fix the positions of the stars with never-before-achieved accuracy. It did for most stars, but pinning down the distance of the Seven Sisters proved something of a headache.