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The concept designs for interstellar probes have been seriously investigated by scientific groups for many years since 1978. Project Icarus is a Tau Zero Foundation (TZF) initiative in collaboration with The British Interplanetary Society (BIS). This link gives an introduction and further links. With luck probes could find planets suitable for colonies that were not too far away. They are looking at a tenth of light speed initially. We already have probes which run for 20 years or so.
Permalink Sat, 05 Mar 2011 18:57:40 UTC | #599084