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Old 2021-01-19, 08:32   #65
xilman's Avatar
May 2003
Down not across

3·3,547 Posts

Originally Posted by Uncwilly View Post
There has to be a sweet spot area for orbits that are the most stable over long periods. Also, unstable not mean it goes away completely.

Problem with the moon is if you want to make the evidence visible from the surface of the earth, that is a major effort.
Why do you want to make it visible from the earth?

Use a few dozen nukes to dig 100-metre craters in a geometrical arrangement --- a diagram of the theorem of Pythagorus, for instance.

Then wait until the discovering civilization can get high-resolution imaging from orbit.
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