NASA uses duct tape to save the day. It secures “British astronaut Piers Sellers to his jet-propelled backpack today for the final spacewalk of the shuttle Discovery’s 13-day mission to the International Space Station.” I have patch stickers for this flight, STS-121. By the way, the saying goes: “Duct tape is like the Force. It has a light side and a dark side, and it binds the universe together.”