Multiple Choice
Based on our current understanding of physics, we can understand the conditions that prevailed in the early universe as far back in time as about .
A) 10 billion years ago
B) one ten- billionth of a second after the Big Bang
C) 380,000 years after the Big Bang
D) 10- 45 seconds after the Big Bang
Correct Answer:

Verified
Correct Answer:
Verified
Q63: Which forces have physicists shown to be
Q64: From what cosmic epoch do the photons
Q65: The cosmic microwave background gives us a
Q66: Evidence that the cosmic background radiation is
Q67: According to the Big Bang theory, why
Q69: Rank these times based on the wavelength
Q70: Evidence for Inflation: What is the observational
Q71: We have direct experimental evidence (from large
Q72: Briefly describe one of the three questions
Q73: The Big Bang predicts that the universe