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killian killian
wrote...
Silver Member
Posts: 6024
10 years ago
One of the most fundamental discoveries about the Universe has been that it is expanding. "The universe is expanding" means
A) our estimate for the size of the universe has increased over the last century.
B) galaxies are growing with time.
C) the cosmological horizon is growing with time.
D) distances between most galaxies are getting larger.
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Smiling Face with Open Mouth
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Answer accepted by topic starter
padrepadre
wrote...
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Educator
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Posts: 21611
10 years ago
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killian Author
wrote...
Silver Member
10 years ago
Thanks for helping me with my astronomy class
Smiling Face with Open Mouth
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