On Apr 9, 6:47 pm, "NTL Newsgroups" wrote:
Im sure there is not a single laser that could undertake this task, but how
about hundreds or even thousands of lasers, all working in sync might work.

Dan.

As transmitted from the moon's L1 that's roughly 58,000 km away from
the moon, and depending on how large of pattern gets projected onto
the dark earthshine illuminated moon (say not more than illuminating a
1,000 km diameter), there is sufficient laser cannon capability if an
array of 10 such commercial laser projections were utilized .

The reflected light of the visual spectrum would still be fairly dim
to the naked eye, unless IR counts, because IR reflects off the moon
at the albedo efficiency of 33 to 50%.
.. - Brad Guth