What is dark energy?
A) the energy associated with dark matter
B) the energy associated with the cosmic microwave background
C) the energy causing the universe to expand
D) the energy causing the universe's expansion to accelerate
Correct Answer:
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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
Q13: What is the assumption of homogeneity?
A)that the
Q14: In 1998,it was announced that the expansion
Q15: Which of the following applies if the
Q16: What is the assumption of isotropy?
A)that the
Q17: What is the point of the raisin
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