[chmike]

Yes. But their existence, and validity as traveling technique, are still to be proved.

The plant seed, or bacteria spore, analogy invalidates the claim that inter stellar travel is impossible for living bodies. Inter stellar travel is thus possible, even without energy source available on the way.

We also have to call back in question our assumptions on how a contact would happen and how the ET would look like.

The abduction data is on this aspect very interesting because no one could have predicted such a contact scenario. Note that I don't pretend it's true, but the thing is that there is a striking piece of evidence on this subject which out rules the theory of false memory. It is the Betty Hill star map that Joachim Koch recognized as to be our solar system. This interpretation makes much more sense than other interpretation for multiple reasons and the killing detail in it is that Betty has drawn in 1962 a ring around Jupiter and the ring was only discovered by Voyager 1 in 1979 !