The cosmological principle states that the universe is 
A) I and II
B) III and IV
C) I and III
D) II and IV
E) I, II, III, and IV
Correct Answer:
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Q10: Measured ages of globular clusters suggests that
Q12: If gravity alone acts to retard the
Q13: The cosmic background radiation comes from a
Q14: The assumption of isotropy states that
A) the
Q16: If the universe is closed and finite,
Q17: The _ view of the universe is
Q18: When a proton and an antiproton collide
A)they
Q18: The Hubble time is
A) the time it
Q19: The assumption of homogeneity states that
A) the
Q20: Space-time will be flat if
A) the universe
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