Zero gravity offers new dimensions of pleasure as the astronauts explore each other's bodies. She floats, legs wrapped around his waist, as he drives into her, his cock filling her completely. He cups her breasts, feeling their weightlessness, his thumbs brushing her nipples. She moans, her voice echoing in the silence, as he fucks her harder, her ass slapping against the porthole, the Earth a distant, unknowing witness to their cosmic coupling.