Multiple Choice
The universe began in the Big Bang. When did the first stars and galaxies begin to appear?
A) immediately, as they were a direct product of the Big Bang
B) about 380,000 years later
C) about 400 million years later
D) not until about 3.2 billion years later
Correct Answer:

Verified
Correct Answer:
Verified
Q40: The cosmic microwave background of photons is
Q41: What does the theory of quantum electrodynamics
Q42: The first 380,000 years of our universe,
Q43: The early universe was characterized by a
Q44: Why might it be impossible for us
Q46: During what time was helium created in
Q47: What is the deuterium bottleneck?<br>A)Deuterium had to
Q48: Suppose the inflationary epoch lasted 10<sup>-32</sup> seconds.
Q49: Detailed examination of the cosmic microwave background
Q50: The Higgs particle is particularly important because