: I've a quick question. Don't ask me how this is done, it's all top secret.
: Still I need your input on it. Say, what if Earth far in the future in
: converted into something very similar to Deathstar in Starwars. The reason
: for this would be to use all of Earth's material (atoms) and at the same
: time build usable structures of it. Well I suppose only this can ewoke
: some question, but don't be so hasty, there's a particular thing I've
: comed to ask you. If you lived on planet which is a vast structure, would
: it be possible to live (for humans) deep under the surface? The gravity,
: if I'm correct would gradually disappear the closer you get to the center.
: What more worries me, is if the pressure would kill you off at a certain
: depth. Any Ideas, is it plausable?
Hmm... Gravity generally gets stronger the closer to the center of it you are. But once you are underneath the surface of something, gravity is also pulling you UP some. In a hollow sphere, with all the mass out the outside shell, gravity inside is nullified. So I'd think that in something like what you're talking about it'd be somewhere in between the two, maybe gravity stays even with surface gravity all the way through?
As for pressure though, yeah. Unless you had airlocks segmenting the atmosphere all the way through, and controlled air pressure in each segment, pressure would either be insanely high at the center or insanely low at the top, depending on how much air you pack in there.
Interestingly enough, these same factors would apply, to a lesser extend, on the Marathon as well...