I recently saw the movie 'Sunshine' where they send a mission to detonate a bomb and save the Sun from dying. In one of the scenes, two astronauts had to cover a distance in the outer space but they didn't have space suits available. They wrapped themselves in some kind of foil and the whole trip in outer space took them several seconds till they got in the space station. Is that physically possilbe? Can a human body survive a few seconds in outer space, just protected by a foil wrap? Another problem would be the pressure - the human body is designed to function under air pressure of 1 atmosphere. Wouldn't the blood vessels burst out in outer space due to the lack of such external pressure?