just as a minor thought i brainstormed on the deployment of a parachute in deep space. because their is no air or molecules like that, THAT I KNOW OF. would the parachute deploy? would it expand and fill with anything like on earth? my thoughts were that if sound cant travel in space without a medium than a chute couldn't open, at least uniformly and fairly evenly like they do here without that same medium. maybe the momentum alone could do it?