This post on Centauri Dreams discusses another possible way to use the Sun's gravity lens, as a way to effectively communicate with an interstellar probe: http:

This post on Centauri Dreams discusses another possible way to use the Sun's gravity lens, as a way to effectively communicate with an interstellar probe: http://www.centauri-dreams.org/?p=10123 http://www.centauri-dreams.org/?p=10123.