| http://www.w3.org/ns/prov#value | - If the object happens to have some sort of wings (which the Shuttle most certainly does NOT, those things sticking out of the sides are stabilizers that provide negligible lift: the things got all the lift of a brick at pretty much any speed below Mach 6 or so), then it can find another semi-stable state in gliding, where potential energy (height) is exchanged for kinetic energy (forward motion).
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