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What would make a star flash red and blue?

  1. Jan 11, 2008 #1
    Hello, several nights ago I was outside looking at the sky. I noticed this strange looking star near the horizon, and I swear to you, it kept flashing from red to blue and back. I vaguely remember reading something about this, but I don't quite remember what it was.
  2. jcsd
  3. Jan 11, 2008 #2


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    Atmospheric distortion causes the light to spread out into its various colors. Bad seeing close to the horizon that night.
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