Article Photos: Glenn marks 50 years since historic orbit of Earth 3/14

  FILE - This Feb. 20, 1962 file photo made available by NASA shows astronaut John Glenn during his space flight in the Friendship 7 Mercury spacecraft, weightless and traveling at 17,500 mph. The image was made by an automatic sequence motion picture camera. Glenn plans to mark the 50th anniversary of his historic spaceflight, Monday, Feb. 20, 2012, with a series of events at Ohio State University, including a special dinner and a live chat with crew members aboard the International Space Station. (AP Photo/NASA, File)