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Poll
What brand of blade do you use ?
Butterfly
Star cluster I_vote_lcap41%Star cluster I_vote_rcap
 41% [ 18 ]
Stiga
Star cluster I_vote_lcap18%Star cluster I_vote_rcap
 18% [ 8 ]
DHS
Star cluster I_vote_lcap5%Star cluster I_vote_rcap
 5% [ 2 ]
Donic
Star cluster I_vote_lcap14%Star cluster I_vote_rcap
 14% [ 6 ]
Yasaka
Star cluster I_vote_lcap7%Star cluster I_vote_rcap
 7% [ 3 ]
729 Friendship
Star cluster I_vote_lcap7%Star cluster I_vote_rcap
 7% [ 3 ]
JOOLA
Star cluster I_vote_lcap2%Star cluster I_vote_rcap
 2% [ 1 ]
Killerspin
Star cluster I_vote_lcap2%Star cluster I_vote_rcap
 2% [ 1 ]
Andro
Star cluster I_vote_lcap2%Star cluster I_vote_rcap
 2% [ 1 ]
Xiom
Star cluster I_vote_lcap2%Star cluster I_vote_rcap
 2% [ 1 ]
Total Votes : 44
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kosovohp



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PostSubject: Star cluster   Star cluster I_icon_minitimeThu Dec 16, 2010 4:48 pm

Star clusters or star clouds are groups of stars. Two types of star clusters can be distinguished: globular clusters are tight groups of hundreds of thousands of very old stars which are gravitationally bound, while open clusters, a more loosely clustered group of stars, generally contain less than a few hundred members, and are often very young. Open clusters become disrupted over time by the gravitational influence of giant molecular clouds as they move through the galaxy, but cluster members will continue to move in broadly the same direction through space even though they are no longer gravitationally bound; they are then known as a stellar association, sometimes also referred to as a moving group.
Star clusters visible to the naked eye include Pleiades, Hyades and the Beehive Cluster.

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