Astronaut Scott Carpenter listens to a question from the media about his experience in space, at the Kennedy Space Center, Friday, Feb. 17, 2012 in Cape Canaveral, Fla. John Glenn fever has taken hold in the U.S. once again. Three days before the 50th anniversary of his historic flight, the first American to orbit the Earth addressed employees at Kennedy Space Center. (AP Photo/Michael Brown)

Photo by: Michael Brown

Astronaut Scott Carpenter listens to a question from the media about his experience in space, at the Kennedy Space Center, Friday, Feb. 17, 2012 in Cape Canaveral, Fla. John Glenn fever has taken hold in the U.S. once again. Three days before the 50th anniversary of his historic flight, the first American to orbit the Earth addressed employees at Kennedy Space Center. (AP Photo/Michael Brown)