They definitely address this in the episode, but its fucking baffling to me. Is caine also vacuum proof? because how the hell does he survive being taken into orbit on the outside of a ship after Jupiter first gets captured? I thought at first "oh he's going into the cargo bay" but when they show up on the next planet, he's clearly still outside. Did they open the cargo hold and let him out? that was awfully nice of them. for some reason this bothers me the most.