ASTRONAUT BUZZ ALDRIN

Apollo 11 Mission astronaut Buzz Aldrin (R) signs a copy of a book for Bobby Stevens (9) as school children visit with him at the St. Louis Science Center in St. Louis on April 27, 2006. Aldrin, the second man to walk on the moon, is in St. Louis as the new IMAX movie "Walking on the Moon," opens at the Science Center. (UPI Photo/Bill Greenblatt)