[ExI] Fermi question

[BillK]

On Sat, Dec 31, 2011 at 9:32 PM, BillK  wrote:
> And you have to be on the
> sun-side of the moon in order to see the earth.
>
>

That's not correct, is it? The moon always has the same face towards
earth, but it goes through phases of the moon, as seen from earth.
Apollo went to the sunny part so they could see what they were doing.

So you could go to a shaded part of the moon's face and look for earth
city lights from there.


BillK