The moon is not so far away in space but it's really far away in terms of momentum, particularly if you want to fly their and fly back. When Werner von Braun figured out the mission plan of Apollo it was a revelation because it was so much cheaper than the alternatives.
The moon is not so far away in space but it's really far away in terms of momentum, particularly if you want to fly their and fly back. When Werner von Braun figured out the mission plan of Apollo it was a revelation because it was so much cheaper than the alternatives.