Why can't they just drop a solar winch down from a shuttle and have planes fly up and clip things on?
Wouldn't it make sense to use parachutes for aborting test flights rather than destroying the whole rocket?
Would a grinding machine be a simple and workable propulsion system for an interplanetary spacecraft?
Could sheets of stacked graphene be used as part of a heat shield, since its melting point is 3000k to 5000 K
If someone built a vacuum tunnel through the atmosphere, could you have an orbit with a sea level perigee?
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