this is an exert from a rant i had a while back now on this same topic.
http://www.iceinspace.com.au/forum/s...t=16004&page=2
"Start with the obvious basics, think about how big the universe is, how many planets there must be, how insignificant we are as a little dot inside a little galaxy swinging in a spiral of millions of other galaxies. Visualize yourself looking down upon millions of galaxies, picture in your head what it would look like. Then ask yourself – if all life exists on a single, insignificantly small rock orbiting inside a galaxy which can barely be differentiated from the millions of other galaxies around… then what is the rest of it for?? Wait maybe that’s too deep for now…
I think that maybe people get too hung up on the idea of aliens visiting earth. Especially when it comes to how! With out current collective body of scientific facts, we have absolutely no idea how it would be possible for aliens to travel great distances through space. Maybe we are (as always) limited by the parameters of our science! Maybe one day as our science grows we will understand. I’m certainly not ruling it out as impossible in the mean time. Maybe; there’s too many maybes hey. Maybe they have, maybe they haven’t. You certainly cant prove it either way, even if u saw it and video taped it. Does it really mater if they have come to earth or not? Even if they never had, I would still reason their existence."
Time to think beyond