Multiple Choice
The cosmic background radiation comes from a time
A) when protons and neutrons were first formed.
B) when the big bang first began to expand.
C) during the inflationary period.
D) when gamma rays had enough energy to destroy nuclei.
E) when electrons began to recombine with nuclei to form atoms.
Correct Answer:
Verified
Correct Answer:
Verified
Q86: By adding the cosmological constant, Einstein made
Q87: "Seeds" around which galaxies, clusters and walls
Q88: Large scale structures of the Universe include
Q89: You live in a Universe where matter
Q90: In the first second of the universe,
Q92: The cosmic microwave background radiation was released
Q93: If the density of the universe equals
Q94: Since the big bang, but before now,
Q95: Prior to 10-36 seconds, the Universe existed
Q96: The flatness problem and horizon problem<br>A)are solved