Innovative Interstellar Explorer (IIE) on Centauri Dreams
The latest piece on Centauri Dreams discusses the Innovative Interstellar
Explorer (IIE) probe concept and links to serveral papers and articles on
the probe, which is planned to reach 200 AU from Sol in 30 years.
Voyager 1 is just over halfway to that distance now.
http://www.centauri-dreams.org/?p=979
The incredible thing to realize is, the nearest star system to our own,
Proxima Centauri, is about 268,000 AU distant.