Greenbelt, Md. 8th May, 2007. Queen Elizabeth II speaks with STS-116 astronaut Nicholas Patrick, back to camera, as NASA Administrator Michael Griffin, right, looks on at the NASA Goddard Space Flight Center, Wednesday, May 8, 2007, in Greenbelt, Md. The Royal couple's appearance was one of the last stops on a six-day visit to the United States. Photo Credit 'NASA/Paul E. Alers' Credit: dpa/Alamy Live News Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/greenbelt-md-8th-may-2007-queen-elizabeth-ii-speaks-with-sts-116-astronaut-nicholas-patrick-back-to-camera-as-nasa-administrator-michael-griffin-right-looks-on-at-the-nasa-goddard-space-flight-center-wednesday-may-8-2007-in-greenbelt-md-the-royal-couples-appearance-was-one-of-the-last-stops-on-a-six-day-visit-to-the-united-states-photo-credit-nasapaul-e-alers-credit-dpaalamy-live-news-image481790148.htmlRM2JYRC70–Greenbelt, Md. 8th May, 2007. Queen Elizabeth II speaks with STS-116 astronaut Nicholas Patrick, back to camera, as NASA Administrator Michael Griffin, right, looks on at the NASA Goddard Space Flight Center, Wednesday, May 8, 2007, in Greenbelt, Md. The Royal couple's appearance was one of the last stops on a six-day visit to the United States. Photo Credit 'NASA/Paul E. Alers' Credit: dpa/Alamy Live News