In article ,
"Rod Speed" wrote:

If a smaller, movable space station would be possible,
at what size do you think it become impossible?

Far smaller than would be needed to provide sufficient
genetic diversity for viable survival of the species.

And it would have to have enough genetic diversity of all the other animals
too.

Completely impossible to make that moveable.

Wow.

You sound just like those who said it was impossible to go faster than
the speed of sound...

--
Alan Baker
Vancouver, British Columbia
http://gallery.me.com/alangbaker/100008/DSCF0162/web.jpg