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  Double Star: Astronomy: Double Star - OBSERVING DOUBLE STARS
Posted on Thursday, December 02 @ 13:56:38 CST by astronomy
 
 
  Double Star

OBSERVING DOUBLE STARS

You can enjoy the different colors of a double, meet the challenge of splitting a close pair, or precisely measure separations.



Astonomers estimate that more than half of all the stars in our galaxy have one or more companion stars. These are true binary -or multiple-star systems in orbit about a common center of gravity. From Earth, we also see a few "optical doubles"—chance alignments of two stars that actually lie at different distances.

 
 
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Astronomy: Double Star - SEEING DOUBLE

 

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