Queen Elizabeth II, lower right, talks to Expedition 15 crew members from left, NASA astronaut, Sunita Williams, Russian cosmonaut Fyodor N. Yurchikhin and cosmonaut Oleg V. Kotov aboard the International Space Station crew along with NASA Administrator Michael Griffin, lower left and NASA astronaut Michael Foale during a downlink at the NASA's Goddard Space Flight Center Operational Control Room, Tuesday, May 8, 2007, in Greenbelt, Md. NASA Goddard was one of the last stops on the Queen's six-day visit to the United States. Photo Credit: (NASA/Bill Ingalls)