Multiple Choice
The future of the overall universe,in terms of its ultimate evolution and whether it will expand forever or eventually contract again,is determined by which of its parameters?
A) the present volume of the universe
B) the amount of matter and energy within it
C) the intensity of cosmic microwave background radiation
D) the temperature of the gas within it
Correct Answer:

Verified
Correct Answer:
Verified
Q65: What is our current understanding of the
Q66: When a high-energy gamma-ray photon collides with
Q67: When the Big Bang began,all the fundamental
Q68: What is the ratio of cosmic microwave
Q69: In the present universe,the "mass density" of
Q71: When the universe was about 2500 years
Q72: In which universe scenario will the present
Q73: Which parameter of the present universe is
Q74: When did the universe cool to a
Q204: How does the cosmological constant differ from