How long will it be before we reach alpha centauri, i was on a thread on Fark.com yesterday about going to mars and it interstellar travel came up. I figured you guys (and girls) would prob have a better idea on what ideas are out there right now. this was my post: do you know how impossibly difficult it would be to send a prob to alpha centauri? The experimental engine in our deep space probe headed for 1992 kd goes 2.38*10^6 kmph (67,000 mph) alpha centauri is 3.8*10^16 m away, with these figures it would take us about 43,475 years to get there. NOt to mention the 4 years of lag time for sending and recieving data to said probe once it gets there. Oh and that ion engine i spoke of, runs off solar power. In deep space solar power is not a good idea. MMMMMkkkayyyy /blhack Some of the other people on the board were saying that with nano probes, and ion engines we could reach speeds of .9 c, is this really feasible.