I saw a very cool scientific movie- http://en.wikipedia.org/wiki/Fortress_2 Its script might be a flop, but it seems from some scenes that it tries to prove some science concepts. Like flying in space without a space suit! Factors like no gravity, zero-air, pressure difference in space etc might be some other space zone thesis!
Proof of societies living in space, interiors of the space ship is like of the movie alien-predator movie world!
So can human beings somehow fly into space?