Comment Re:We need an Earth Orbit Asteroid (Score 1) 128
This all plan is just redoing 60's, man to moon in telephone booth and telephone booth in tip of huge rocket. Nasa should leave orbital rocket launch with current technology to commercial companies like Space-X and focus developing new technologies. Air breathing space plane for LEO launch and VASIMR based reusable cruiser to travel from orbit to moon, asteroids and Mars. There need to be someone like Burt Rutan to invent new ideas.
There is no sense to carry a lot of oxygen from earth to orbit for chemical orbit to destination vehicle when VASIMR works with fractional amount. Also the first few mach of delta V uses most of rocket fuel used. It is possible to get around 3 mach with traditional air breathing plane. Check XB70 Valkyrie, there was even plans to use it as Rutan's White Knight. All technology for XB70 is exiting, two of them has been made and did first flight 1964. Basically engine technology was same than SR71. With modern SCRAMJET engines even larger part of delta V van be made with air breathing engines.
Reducing orbital launch cost to fraction with air breathing space planes and orbit to target cost by reusable VASIMR crafts opens door for new large scale space exploration. What hell is reason to stuck in old technology, get big contracts to old government contractors ?