Multiple Choice
In principle,if we could see all the way to the cosmological horizon we could see the Big Bang taking place.However,our view is blocked for times prior to about 380,000 years after the Big Bang.Why?
A) Before that time,the universe was too crowded with stars.
B) Before that time,the gas in the universe was dense and ionized and therefore did not allow light to travel freely.
C) Before that time,the universe was dark so there was no light to illuminate anything.
D) 380,000 years after the Big Bang marks the time when stars were first born,and thus began to shine the light by which we can see the universe.
Correct Answer:

Verified
Correct Answer:
Verified
Q78: Why can't current theories describe what happened
Q79: Why do we think tiny quantum ripples
Q80: The Big Bang theory is supported by
Q81: Refer to this scenario for the following
Q82: The fact that the sky is dark
Q84: The Big Bang theory seems to explain
Q85: Refer to this scenario for the following
Q86: According to the Big Bang theory,how many
Q87: Based on the results from Planck,the overall
Q88: Which forces have physicists shown to be