To: carriage_hill
No. It's a matter of conservation of energy. The skydiver had potential energy (height above ground) but not much kinetic energy (started from essentially zero velocity). Returning from orbit, a spacecraft has more potential energy (higher altitude and greater mass) and a heckuva lot more kinetic energy (orbital velocity). Both “burn off” that energy returning to the Earth, but the spacecraft has a lot more to get rid of than the skydiver.
41 posted on
10/15/2012 10:46:21 AM PDT by
chimera
To: chimera; sloop
That makes sense.
Don’t shuttles travel at something like 15,000-24,000 mph in space? That’s coming-in pretty “hot”... don’t they turn ‘em around and do a burn to slow down?
44 posted on
10/15/2012 10:56:33 AM PDT by
Carriage Hill
(The 0bummer Penguin: I played this country like a harp from hell.)
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