Thursday, January 18, 2007

APOD 3.2 The Goat Hanger Asterism


There has been a debate whether which this group of stars0 visable with Binoculars- is a Star Cluster or Asterism. Due to measurements taken on Earth's orbit around the sun (i.e., measuring distance using Paralax), there seem to be angular differences int he stars' orbits, making it likely that they are in fact just an asterism, a chance group of stars, and not a cluster.

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