Mass
That's true! But it also means: any spacecraft leaving the Earth-Moon system will be so massive that arguments claiming it's easier to Land on Mars (or at least its moons) than it is to land on the Moon, fall flat!
Space/Science » in reply to So we'll have to build real spaceships to travel in space. Go figure.
That's true! But it also means: any spacecraft leaving the Earth-Moon system will be so massive that arguments claiming it's easier to Land on Mars (or at least its moons) than it is to land on the Moon, fall flat!