On Apr 10, 12:04 am, Pat Flannery wrote:
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.

Several years back somebody came up with a scheme where as many people
around the world as possible were supposed to aim their laser pointers
at the Moon simultaneously.
It wouldn't have worked, but it was kind of a fun idea.

Pat

A sufficient battery or array of green power lasers in the commercial
range of several watts each, as such could rather easily make a
sustained 100 km diameter spot on the physically dark lunar surface
visible to the naked human eye, although red lasers would actually
reflect more efficiently. Laser tracking would be most difficult for
the majority of the public armatures, but not insurmountable.

Using 1/10 second pulsed laser shots at much greater intensity would
be more doable.
.. - Brad Guth