first i have to apologize if my question sounds dumb. but i graduated only recently from high school. so my current knowledge is at best as good as other high school students. here is my question: let's say that i am boarding a spaceship in the northpole. and then the ship takes off. am i actually going up or down in the universe? does the cosmos actually have a preferred direction? can we actually determine the direction by examining the degree of polarization of the radio waves emitted by the galaxies? thank you.