Multiple Choice
Dark energy is the term used to describe ____.
A) the pressure inflating "voids" in the distribution of galaxies
B) radiation from antimatter and non-baryonic matter
C) a component of the cosmic microwave background radiation
D) an effect that works with gravity to decelerate the expansion of the Universe
E) an effect that works against gravity to accelerate the expansion of the Universe
Correct Answer:

Verified
Correct Answer:
Verified
Q12: The Hubble time is_.<br>A) an estimate of
Q13: The proper interpretation of a what a
Q14: In the early universe, the electromagnetic and
Q15: Why did the big bang only create
Q16: The gas created by the big bang
Q18: The expansion of the Universe is accelerating.
Q19: Dark matter must be _.<br>A) baryonic<br>B) non-baryonic<br>C)
Q20: The Hubble time only describes a Universe
Q21: The acceleration of the Universe depends on
Q22: Einstein's theory of mass-energy equivalence shows that