> > > And you don't have to worry about fatigue or life support with a robot. > > > > yes you do > > your robot will break > > it will die For pure exploration, human might be weakest link. But I think it is a useful and worthwhile exercise - just the solution to the water needs in the journey would benefit man-kind on earth greatly. Or am I buying too much into Bush's policy? Cheers, Ling SM -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body