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Astronomy Picture of the day for Cape Breton Islanders

06 Sep

Astronomy Picture of the Day for Cape Breton Daily

M6_eguivar_900

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M6: The Butterfly Cluster
Image Credit & Copyright: Sergio Eguivar Buenos Aires Skies

Explanation: To some, the outline of the open cluster of stars M6 resembles a butterfly. M6, also known as NGC 6405, spans about 20 light-years and lies about 2,000 light years distant. M6 can best be seen in a dark sky with binoculars towards the constellation of Scorpius, coving about as much of the sky as the full moon. Like other open clusters, M6 is composed predominantly of young blue stars, although the brightest star is nearly orange. M6 is estimated to be about 100 million years old. Determining the distance to clusters like M6 helps astronomers calibrate the distance scale of the universe.

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Posted by on 06/09/2011 in Uncategorized

 

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