But those missions are the result of behind-the-scenes engineering that provides new technologies. To get humans to Mars, the National Aeronautics and Space Administration is going to have to develop a variety of new technologies. But these technologies can also be used for other purposes, such as robotic science missions or more-advanced commercial satellites, says James Reuther, deputy associate administrator of programs in NASA’s Space Technology Mission Directorate.
1 metric ton to the surface. Crewed missions to Mars would be on the order of 10 million to 100 million metric tons, Reuther notes.