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Home Q & A Board Science-Related Homework Help Physics Astronomy
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killian killian
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10 years ago
What do we mean when we say that the universe is expanding?
A) Everything in the universe is gradually growing in size.
B) Within galaxies, average distances between star systems are increasing with time.
C) The statement is not meant to be literal; rather, it means that our knowledge of the universe is growing.
D) Average distances between galaxies are increasing with time.
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padrepadre
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10 years ago
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killian Author
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10 years ago
Thanks for helping me with my astronomy, very thankful.
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