>> dickerson: before we go any >> i am in the u.s. destiny laboratory module which is like the main module for the u.s. side of the space station, it's combination of laboratory and sort of like the bridge of a ship. i guess you could describe with it a lot of systems that are required to operate the space station are in here. as well as experiments. j in case there are any conspiracy theorists out there how would you prove to us that you're in veer row gravity? in zero gravity. >> i would just do this for