Lighter metals, such as aluminum and titanium can be mined from the lunar regolith. Oxygen is a by-product of this refinement process. Compare the 1961 painting of an asteroid on the left to the image on the right, the asteroid Gaspra, visited by Galelleo on the way to Jupiter. Physical disabilities One final advantage to be gained in space is by people with disabilities. Limited mobility will be less of a problem on the Moon or Mars, or in the upper levels of an O'neill, and totally not a problem in microgravity.
Legs are quite useless in free fall.
Lois Bujold MacCalister gave new meaning to Handicapped in her novel , Falling Free . Cheep energy makes the networking of the country cheaper, since Energy costs are a large factor involved in that project. Also computer chips manufactured in microgravity will be much larger and cheaper than possible on earth, bringing the cost of computing down, and the power up. If you have any suggestions, comments, or concerns, please let me know . On to where Back to David DeGraff's home page.