Expedition 42 Commander Barry “Butch” Wilmore, left on screen, Flight Engineer Terry Virts, and European Space Agency (ESA) astronaut Samantha Cristoforetti talk to NASA Administrator Charles Bolden and Washington, DC area students via live downlink during the annual White House State of Science, Technology, Engineering, and Math (SoSTEM) address, Wednesday, Jan. 21, 2015, in the South Court Auditorium in the Eisenhower Executive Office Building on the White House complex in Washington. Photo Credit: (NASA/Bill Ingalls)