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4 November, 18:27

Besides parallax, how else can we determine the distances to stars

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  1. 4 November, 19:52
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    The use of cepheid variables is your answer
  2. 4 November, 19:59
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    There is no direct method currently available to measure the distance to stars farther than 400 light years from Earth, so astronomers instead use brightness measurements. It turns out that a star's color spectrum is a good indication of its actual brightness.
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