I remember as a kid (long before I ever even heard of the 'lunar hoax' theory), I always wondered where all the fuel needed for the trip home was stored in the lunar lander. Knowing what I do now, I laugh at the short sightedness of the people who were in charge of this campaign. While I realize that the moon's gravity is 1/6 of earths, it still takes a considerable amount of fuel to break out of that gravity and then to propel the lander back to Earth. The fact is, the human race will probably never be able to land a vehicle on a moon or a planet with enough fuel in order to be able to break out again: 1) Because of all the wieght (tens of thousands of pounds of fuel), and 2) The risk of explosion on impact (highly volatile liquid oxigen). Of course, this is just the tip of the iceberg when it comes to logistical impossibilities (most notable the Van Allen radiation belt), but I thought it was an interesting one that I hadn't heard before.