What properties does the cosmological principle require the universe to have?
A) homogeneous and expanding
B) homogeneous and isotropic
C) isotropic and accelerating
D) isotropic and expanding
Correct Answer:
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Q2: Imagine three universes that have the same
Q3: What do current observations indicate about the
Q4: What property of an antiproton is opposite
Q5: As the universe cooled,it eventually reached a
Q6: What is quintessence?
A)the name of the force
Q7: Under what conditions will space-time be flat?
A)if
Q8: What happens when a proton and an
Q9: Suppose you found a gas cloud,the atoms
Q10: What is the Hubble time?
A)the time it
Q11: What does the resolution of Olbers' paradox
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