The life expectancy of people going to Mars may be decreased by the higher level of radiation that they receive.
Buzz AldrinI believe that space travel will one day become as common as airline travel is today. I'm convinced, however, that the true future of space travel does not lie with government agencies -- NASA is still obsessed with the idea that the primary purpose of the space program is science -- but real progress will come from private companies competing to provide the ultimate adventure ride, and NASA will receive the trickle-down benefits.
Buzz AldrinWalking around on the moon was significantly easier than we'd thought it would be. There weren't any balance problems, so you weren't tumbling over.
Buzz AldrinDrive over to the nearest airport, and enroll in flight classes. You will experience the joy of freedom in the air above, as you study the mechanics of how this is made possible by understanding the construction, the laws of motion, the air that can provide lift when it is moved by propulsion through the air, and stay above the gravity pulling the airplane back down to earth.
Buzz Aldrin