Here is a theory that has some marginal merit. None of what we perceive in the game is actually happening. The travel to other worlds, the restoration from our deaths, none of it is actually taking place in a real world; it is all inside a program that is being powered by the entity we see as the Traveler. Why... Gravity. All the locations we are going to have no differances in gravity, a mistake that the simulation that we are in has made and forgotten to represent. If we were really there, say on the moon, our jumping would be incredibly better and the sparrows would barely be able to remain on the surface after we rocket over any kind of a bump. Earth and Venus are similar (1.0 to .90 gravity each) so the changes there would be minimal but noticable. Mars and the Moon (.38 and .17 respectfully) are a third to a fifth roughly of Earth and the changes to movement, ballistics, vehicular activity would be vastly different. Jupiter (should we ever get there) with its 2.36 gravity (almost 2 1/2 Earths) would have us slugging along like snails as we tried to cross the surface, too exhausted to lift the almost three times as heavy weaponry we are carrying. Yeah, I know... but it occurred to us while running patrols on the moon and thought it might make some of you think. For a more serious topic try here [url]http://www.bungie.net/en/Forum/Post/72178812/0/0/1[/url] - enjoy and good hunting mates, see ya in the Tower.