Buzz Aldrin propellants, with an expected five and a half month journey from the Earth to Mars, and a return trip to Earth of about the same duration on a twin-cycler. Aldrin continues to research this concept with engineers from Purdue University. In December 2003, Aldrin published an opinion piece in "The New York Times" criticizing NASA's objectives. In it, he voiced concern about NASA's development of a spacecraft "limited to transporting four astronauts at a time with little or no cargo carrying capability" and declared the goal of sending astronauts back to the Moon was "more like reaching for past glory
Buzz Aldrin NASA's Astronaut Group 2 was selected in 1962 was rejected on the ground that he was not a test pilot. He was aware of the requirement, and asked for it to be waived, but this request was turned down. On May 15, 1963, NASA announced another round of selections. This time requirement was that applicants have either test pilot experience or 1,000 hours flying time in jet aircraft, and Aldrin had over 2,500 hours of flying time, of which 2,200 was in jets. His selection as one of fourteen members of NASA's Astronaut Group 3, was publicly announced on October