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What is the isotropy (or horizon) problem?

doit_the_clown

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What is the isotropy (or horizon) problem?

What is the isotropy (or horizon) problem?
A)   The universe is not as uniform as the standard cosmological model predicts it should be.
B)   If the universe expanded at the rate originally predicted, then the parts we see in opposite directions would never have been in equilibrium with each other and should not exhibit the degree of isotropy we observe.
C)   Without modification, the standard theory suggests that an observer on a distant galaxy would not be able to see our Galaxy because of the intense cosmological redshift.
D)   As we observe galaxies on the “horizon,” the farthest distance obtainable, the standard theory predicts that the recessional velocity should approach the speed of light.

Textbook

Discovering the Universe

Discovering the Universe

Edition: 7^th

Authors: Kaufmann, Comins

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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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hyponotica

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I appreciate what you did here, answered it right Smiling Face with Open Mouth

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This helped my grade so much Perfect

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mkyoungs

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