President Obama Meets With NASA Astronaut Scott Kelly In The Oval Office

WASHINGTON, DC - OCTOBER 21: U.S. President Barack Obama (R) delivers remarks after meeting with retired NASA astronaut Scott Kelly (C) and his twin brother Mark Kelly (L), White House Office of Science and Technology Policy Director John Holdren and NASA Administrator Charlie Bolden in the Oval Office at the White House October 21, 2016 in Washington, DC. A veteran of many space missions, Kelly commanded the International Space Station three times, was pilot and mission commander for two Space Shuttle flights and holds the record for the total accumulated number of days spent in space by an American astronaut. (Photo by Chip Somodevilla/Getty Images)