I think I know what blocked passage you mean, in level 1, you have to move the boxes correctly, to be able to pass. I couldn't figure out how to make it reset exactly, in case you get it wrong, but you can quit the level and try again, from the pause menu.
well, I wish I had better ideas at the time, but yes it is a bit of a stretch. The story is that the universe is shrinking istead of expanding, so theres that interpretation of space, and the stars are trying to help, they live in this universe, they wanna help.