Goddard Queen Visit

Queen Elizabeth II and NASA Administrator Michael Griffin plant a commemorative tree on the grounds of the visitor's center during a visit to the NASA Goddard Space Flight Center, Tuesday, 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/Debbie McCallum"

Queen Elizabeth II and NASA Administrator Michael Griffin plant a commemorative tree on the grounds of the visitor's center during a visit to NASA's Goddard Space Flight Center, Tuesday, 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/Debbie McCallum)

Goddard Space Flight CenterQueen Elizabeth IIMichael GriffinGreenbeltMaryland