Astronaut Edwin E. Aldrin, Jr., lunar module pilot, descends the steps of the Lunar Module ladder July 20, 1969 as he prepares to walk on the Moon. This photograph was taken by Apollo 11 commander astronaut Neil A. Armstrong with a 70mm lunar surface camera during the Apollo 11 extravehicular activity. The 30th anniversary of the Apollo 11 Moon mission is celebrated July 20, 1999. (credit: NASA/Newsmakers)
Remembering Neil Armstrong
Astronaut Neil Armstrong smiles inside the Lunar Module July 20, 1969. The 30th anniversary of the Apollo 11 Moon landing mission is celebrated July 20, 1999. (credit: NASA/Newsmakers)
Remembering Neil Armstrong
The December 1969 Cover Of National Geographic Depicts The Famous Photograph Of Edwin E. "Buzz" Aldrin Taken By Neil Armstrong On The Surface Of The Moon. The 30Th Anniversary Of The Apollo 11 Moon Landing Mission Is Celebrated July 20, 1999. (credit: Getty Images)
Remembering Neil Armstrong
US astronaut Neil Armstrong poses in front of his photo during a visit to the Prince Felipe Museum, in Valencia 26 July 2005. (credit: JOSE JORDAN/AFP/Getty Images)
Remembering Neil Armstrong
The National Aeronautics and Space Administration (NASA) has named these three astronauts as the prime crew of the Apollo 11 lunar landing mission. Left to right, are Neil A. Armstrong, commander; Michael Collins, command module pilot; and Edwin E. Aldrin Jr., lunar module pilot. The 30th anniversary of the Apollo 11 Moon mission is celebrated July 20, 1999. (credit: NASA/Newsmakers)
Remembering Neil Armstrong
The Apollo 11 Saturn V space vehicle lifts off July 16, 1969 from Kennedy Space Center's Launch Complex in Florida. The space craft was injected into lunar orbit on July 19 with Astronauts Neil A. Armstrong, Michael Collins and Edwin E. Aldrin Jr. on board. The 30th anniversary of the Apollo 11 Moon landing mission is celebrated July 20, 1999. (credit: NASA/Newsmakers)
Remembering Neil Armstrong
Astronaut Neil A. Armstrong poses for a portrait July 1969. Armstrong was the Commander of Apollo 11 Lunar Landing Mission. The 30th anniversary of the Apollo 11 Moon landing mission is celebrated July 20, 1999. (credit: NASA/Newsmakers)
Remembering Neil Armstrong
US President Barack Obama stands alongside the first man on the moon Neil Armstrong (2nd R), and fellow Apollo 11 crewmembers Edwin "Buzz" Aldrin (L) and Michael Collins, during a meeting on the 40th anniversary of NASA's first human landing on the moon in the Oval Office of the White House in Washington, DC, July 20, 2009. (credit: SAUL LOEB/AFP/Getty Images)
Remembering Neil Armstrong
US aviator and former astronaut Neil Armstrong speaks at the Congress Meet the Future, Science & Technology Summit 2010 at the World Forum in The Hague on November 18, 2010. (credit: MARCEL ANTONISSE/AFP/Getty Images)
Remembering Neil Armstrong
An undated picture shows the space suit US astronaut Neil Armstrong wore during his outing on the Lunar surface part of the Apollo XI manned space mission to the moon. (credit: AFP/Getty Images)
Remembering Neil Armstrong
Astronaut Neil Armstrong, commander of Apollo 11; astronaut Eugene Cernan, commander of Apollo 17; University of Alabama aerospace engineering professor Michael Griffin; and Massachusetts Institute of Technology Department of Earth, Atmospheric and Planetary Sciences Chair Maria Zuber testify before the House Science, Space, and Technology Committee about human space flight on Capitol Hill September 22, 2011 in Washington, DC. NASA unveiled last week their new heavy-lift rocket system that will put humans into space with a command capsule that is already under development. The estimated five-year price tag for the giant rocket is $10 billion, $6 billion for the capsule and $2 billion for the launch site at Kennedy Space Center in Florida, officials said. (credit: Chip Somodevilla/Getty Images)
