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staedtler staedtler
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7 years ago
How many barred spiral galaxies are there compared to ordinary spiral galaxies?
A)   There are about half as many barred spirals as there are ordinary spirals.
B)   There are about twice as many barred spirals as there are ordinary spirals.
C)   About one in ten spiral galaxies contains a bar.
D)   The numbers are essentially equal.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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hyponoticahyponotica
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7 years ago
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7 years ago
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