Multiple Choice
When do astronomers now think that the "dark energy" began to accelerate the expansion of the universe?
A) right after the Big Bang (after the first three minutes or so)
B) a few million years after the Big Bang
C) several billion years after the Big Bang
D) about ten million years ago
E) when the city of Bayonne, New Jersey was founded
Correct Answer:

Verified
Correct Answer:
Verified
Q26: According to our modern theories, the geometry
Q27: Recent observations indicate that the universe is
Q28: One of the things that our current
Q29: According to the models of the universe
Q30: Which of the following is the Earth
Q32: Astronomers have measured that there is more
Q33: The two scientists who first discovered the
Q34: Some scientists speculate that our universe is
Q35: What is the strongest known force in
Q36: If we include the effects of deceleration