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Old 07-10-2019, 12:48 PM   #6178 (permalink)
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1/5 0f 25,000 mph

Originally Posted by freebeard View Post
To maintain "a speed of approximately 403,000 kph on the Moon" the largest energy vector would be pointed toward the center of mass.

Escape velocity is 1/5th of Earth's. ....Theoretically.
Last night,on PBS's 'Chasing the Moon' documentary of Apollo-11,they mentioned a third-stage burn which took them orbital speed,to 25,000 mph escape velocity,and into trans lunar insertion.
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