John Langford, President of the American Institute of Aeronautics and Astronautics (AIAA), delivers remarks during the opening ceremony of the 70th International Astronautical Congress, Monday, Oct. 21, 2019 at the Walter E. Washington Convention Center in Washington. Photo Credit: (NASA/Joel Kowsky)

American Institute of Aeronautics and Astronautics (AIAA) President John Langford delivers remarks during a reception hosted by the American Institute of Aeronautics and Astronautics (AIAA) to celebrate NASA's 60th anniversary, Thursday, Sept. 20, 2018 at the Ronald Reagan Building and International Trade Center in Washington, DC. Photo Credit: (NASA/Joel Kowsky)

American Institute of Aeronautics and Astronautics (AIAA) President John Langford delivers remarks during a reception hosted by the American Institute of Aeronautics and Astronautics (AIAA) to celebrate NASA's 60th anniversary, Thursday, Sept. 20, 2018 at the Ronald Reagan Building and International Trade Center in Washington, DC. Photo Credit: (NASA/Joel Kowsky)