space shuttle obsolete

[Jon Mann]

Ever since the Space Shuttle Challenger exploded on takeoff I realized 
NASA technology is neither safe nor cost effective, but a multi billion 
dollar business.   I believe that the Russian approach to orbital 
launches is cheaper and far less dangerous.  It appears the Chinese 
will also be relying on rocket launches rather than expensive and 
inefficient orbital vehicles.
Here is my idea that I have proposed to friends who have far more 
knowledge and expertise than a layman such as myself.
Use tried and true disposable solid fuel boosters to launch satellites, 
robotic missions,  scientific experiments, etc.  And when necessary, 
human astronauts to work on the space station, make repairs on the 
Hubble, etc.  Rather than using an antiquated shuttle system it would 
by more practical to develop nuclear powered smaller vehicles that 
could be launched like the Mercury, Gemini and Apollo Capsules, but 
with better propulsion and maneuvering technology.  It could remain 
docked to the space station, providing additional living space, and 
available for interorbital missions, such as repairing the Hubble and 
eventually returning to the moon.  It is impractical to launch heavy 
shuttles out of the gravity well and then return them to earth, 
subjecting them to re-entry damage and endangering the lives of our 
hero astronauts.  Continue to use them in orbit and return the 
astronauts the old fashioned way.  The logistics should not be 
difficult.

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