If you built a car in, say, Germany, for use in Canada, you could assume that the roads will be more or less the same. Gravity will work the same. While the weather might not be exactly the same, it ...

Click to open image viewer. This is the Lunar Module Ascent Engine, one of the most important in the manned Apollo missions. It was used to lift up the ascent stage of the Lunar Excursion Module (LEM) ...