Enlarge this imageOn Feb. twelve, 1984, Bruce McCandle s ventured absent unrestrained through the safety of his spaceship, which no past astronaut had done. He could get it done due to the fact of the brand-new, jet-powered backpack.NASAhide captiontoggle captionNASAOn Feb. 12, 1984, Bruce McCandle s ventured away unrestrained within the basic safety of his spaceship, which no past astronaut had p...