Space, the final frontier. So began every episode of Star Trek, reminding us of the vast expanse still to conquer. But is it really? Over the years, NASA's research into that "vast expanse" has yielded many state of the art inventions for the welfare of humanity, bringing the future to the present. Many of the everyday products and technologies people use are really by-products of that sophisticated space research. NASA doesn't just send men to the moon; they’re engaged in a quest to benefit mankind in many ways, making good on one of its founding principles: To benefit the general public, and to change your life. Here are some NASA discoveries that have revolutionized the world and changed your life.