re: Moondust!
Hi Raoul.
In the article it says :
“Boost that speed to 2 kilometers per second, and the projectiles can completely circle the Moon. If no mountains got in the way, grit accelerated by a rocket landing could zip entirely around the Moon "and land back at the rocket's feet"
So I guess that, after you land on the moon, you might not want to be in a big hurry to leave the protection of your spacecraft cabin. Wait at least the time of one orbital revolution.
Tom C.