[Laser] Lunar downlink

[J. Forster]

Or put some system on the moon to track a beacon on earth.

Nice to think about, but we'll never go back to the moon for 20 years at least.
-John

Andrew T. Flowers, K0SM wrote:

> Putting a laser on the surface of the moon and pointing back at a target
> on earth is no trivial task.  Many people forget that although the moon
> generally has one side facing earth, it wobbles around
> considerably--this is what causes libration fading for those of you who
> are familiar with EME.  If you wanted to put a laser up there and point
> it back toward earth you would have to compensate for this complex
> wobbling.