NASA astronaut Randy Bresnik, left, and ESA astronaut Paolo Nespoli, right, present Marty Kelsey, second from right, and Beth Wilson, of STEM in 30 with their sticker that flew in space onboard the International Space Station during expeditions 52/53, Thursday, May 10, 2018 at the Smithsonian National Air and Space Museum in Washington. Photo Credit: (NASA/Aubrey Gemignani)