Experiment of December 8, 2019:
The time to submit an answer is over. You can now view the solution of the experiment.
Why is the far side of the moon sometimes called the "dark side of the moon"?
A) It is always dark there and therefore very cold.
B) We can never see this side from Earth and have no direct radio connection to it. But it is not dark.
C) There are very high mountains on the moon which cast long dark shadows.
D) A landing on this side of the moon is too dangerous, so the moon there shows "its dark side".