1622. No, not the year 1622, 1.622 m/s2, the gravitational acceleration on the surface of the Moon, basically the amount of gravity pulling you, sticking your... boots to the lunar soil (bare feet are not recommended). That's, as you may recall, about one sixth compared to the g here on Earth which is 9.81 m/s2. And it has some consequences.
John Young, commander of Apollo-16, does the Big Navy Salute. He jumped up over knee height in a heavy spacesuit. Twice.
For more on the consequences of the number 1.662, enjoy the whole story of our László Molnár, here.
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