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doit_the_clown doit_the_clown
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7 years ago
The characteristics of an open cluster of stars are
A)   a few hundred members, often very young and still embedded in the gas and dust from which they were formed.
B)   hundreds of thousands of members, all very old, surrounded by very little interstellar gas and dust.
C)   a few dozen members, the remnant of a globular cluster of stars from which most of the members have escaped.
D)   many thousands of members of different ages.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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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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papachulopapachulo
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7 years ago
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doit_the_clown Author
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7 years ago
Smart ... Thanks!
Harvinder
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Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
rudy.zondo
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2 hours ago
Thanks
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