4
votes
0answers
81 views

What can be the lightest possible moon launch vehicle?

I tried calculating this, but it gets too complicated. Assume, we have a Moon orbit station and ISS on Earth orbit. We have a Moon base. We want to send a tourist for a week on the Moon and back. We ...
4
votes
2answers
181 views

What kind of cooling mechanism could be used in outer space?

This question arises out of this question on Quora - Apollo 11: 1969 Moon Landing: Did Neil Armstrong really land on the moon? I'm convinced with most of the explanations provided in the first ...