> Hi Jack!
 >  JS> Using known physics as a guide line, Returning the information found
 >  JS> on earth to their home world, the aliens would be communicating to
 >  JS> relatives far into their own future. Whoever sent them on their 
osmic
 >  JS> mission would have a wait of thousands of years for the results of
 >  JS> said mission. ...It almost seems pointless.
 > What's the point of using "known physics"?  Surely what you refer
 > to is a
 > human standard and has little to do with the possibility of alien
 > races.
 > If we /have/ been visited by beings from another world, then it
 > stands to
 > reason that they have capabilities far beyond our own and could
 > quite
 > easily have developed "machines" (or other word of your choice)
 > that are
 > outside our experience.  These machines may use a completely
 > different form
 > of propulsion to anything we have even thought of.  Maybe they
 > have harnessed
 > the power of tachyon particles and can therefore travel at speeds
 > greater
 > than the speed of light and consequently can time travel.  Who
 > knows?  The
 > only thing that we can be sure of is it is folly to think of their
 > technology in terms of human physics and abilities.
Practicality dictates we follow the line of physics we are familiar
with. Anything beyond these limits is pure speculation. "What ifs"
are fun, but non productive. ;-)
Regards,
Jack
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