Astronaut Tingle at Udvar-Hazy Center

NASA astronaut Scott Tingle helps conduct an experiment about sound waves in a vacuum during a taping of STEM in 30 with Beth Wilson and Marty Kelsey, 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)