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doit_the_clown doit_the_clown
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7 years ago
A rich, regular cluster of galaxies differs from a rich, irregular cluster in that it
A)   has its galaxies distributed in a regular, highly flattened system (like a disk).
B)   contains fewer galaxies than an irregular cluster.
C)   lacks the giant elliptical galaxies often found in irregular clusters.
D)   has fewer spirals and more ellipticals and S0 galaxies than an irregular cluster.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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7 years ago
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doit_the_clown Author
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7 years ago
Brilliant ツ
Zacellison
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Yesterday
Smart ... Thanks!
kater28
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2 hours ago
This site is awesome
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