NASA astronaut Scott Tingle speaks to students about his time onboard the International Space Station, Wednesday, Sept. 12, 2018 at the Smithsonian National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, Va. Tingle spent 168 days onboard the International Space Station as part of Expeditions 54 and 55. Photo Credit: (NASA/Joel Kowsky)