On Aug 24, 6:41*am, eric gisse wrote:

I have a difficult time imagining how a centimeter scale
probe could have the power source and physical antenna size required to
send anything to Earth.

Even from interplanetary space... not to mention the much much MUCH
harder problem of doing it from interstellar distances. You might be
able to power them not with photovoltaics, but beamed power,
illuminating the constellation of nanosats when they are near
something of interest... but in that case you're re-inventing Starwisp
(but with a poorer transmission ability). Personally, Starwisp seems
more plausible.

--
Brian Davis