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• by OliviaDP

  Looks like a firefly passing in front of the lens (wich would be very strange).

  Posted March 22, 2013 9:29 PM

• by ElisabethB moderator

  That is a satellite trail.
  The satellite reflects the sunlight and because it moves so fast it gets caught in just one filter.
  Satellite trails can also be blue or red.

  Posted March 22, 2013 9:30 PM