Tag Archives: Parallax: Asterisms

  1. Parallax: Asterisms

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    September 6, 2013 by The Citron Review

    by David K. Wheeler   There are few ways to measure distance at night but for the slight blueshift streakas …
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[Unidentified little girl dressed in winter clothing with hand muff, standing], Emery R. Gard, 1865-1870, J. Paul Getty Museum

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