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's Race Into Space of the mission launches, and new multiplayer modes. The developers worked to maintain historical accuracy, including all the actual major space hardware and several alternative proposals that were considered at the time, but did make some compromises and simplifications in the name of game balance and avoiding complexity. They also consulted Apollo 11 astronaut Buzz Aldrin, who gave permission for his name to be used for the game. "Buzz Aldrin's Race Into Space" has two sides, the United States and the Soviet Union, unlike "LIFTOFF!" which supported up to four (the other two sides in "Liftoff!" were Europe and Asia).