This is John Glenn, standing in front of "Friendship 7," one of the spacecraft from the Mercury missions. This was the United States' first manned orbital mission, 52 years ago today. Glenn orbited the Earth three times, at a maximum altitude of 162 statute miles at an approximate speed of 17,500 miles per hour. Total mission time was 4 hours, 55 minutes and 23 seconds.

Via NASA Image of the Day.