Space exploration is saved for those with big brains and an even bigger heart, courage-wise. It takes so much discipline to become one of the chosen few, and then to actually go beyond our world into the unknown (and stay there for weeks, months or years) is an even bigger challenge. We owe a lot to the brave (and freakishly intelligent) few in NASA, even more than we know.
Just how much has leaving this planet benefitted it? Ever wondered how an amazing, no-touch thermometer finds out how warm you are? Or how the shoes on your feet are incredible soft and bouncy, it makes you want to wear them everyday? Have a glimpse at the gallery below. The answers may surprise you.