Expedition 54 Postflight Presentation at NASM

NASA astronaut Joe Acaba answers an audience members question during "What's New in Aerospace," Thursday, June 14, 2018 at the Smithsonian National Air and Space Museum in Washington. Acaba and astronaut Mark Vande Hei answered questions from the audience and spoke about their experiences aboard the International Space Station for 168 days as part of Expedition 53 and 54. Photo Credit: (NASA/Joel Kowsky)