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killian killian
wrote...
Silver Member
Posts: 6024
10 years ago
Based on counting the number of galaxies in a small patch of the sky and multiplying by the number of such patches needed to cover the entire sky, the total number of galaxies in the observable universe is estimated to be approximately
A) 100 million.
B) 1 billion.
C) 10 billion.
D) 100 billion.
E) 1 trillion.
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2 Replies
Smiling Face with Open Mouth
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Answer accepted by topic starter
padrepadre
wrote...
Staff Member
Educator
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Posts: 21611
10 years ago
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killian Author
wrote...
Silver Member
10 years ago
Thanks sir
Smiling Face with Open Mouth
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