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*So anyway, he said that 100 billion years from now, which will still be long before the universe has died from chronic entropy, all the galaxies of the universe will have moved so far apart, not even the strongest and best radio telescopes any civilization could ever have, will be able to see them.
Obviously Earth and its sun will have been long dead by that point, but any civilization anywhere will have this problem , since all the matter clusters (galaxies and galaxy clusters)of the universe have been all moving away from each other and accelerating since the Big Bang.

And the problem is that there will be a "wall" of impenetrable radiation between anybody's position anywhere in the universe and all the other galaxies which is what will make it impossible to see anything.

So, an astronomer on any planet anywhere in the universe 100 billion years from now will see only his own galaxy's stars and nothing else. Even his civilization's most powerful radio telescopes will show nothing but utter nothingness "out there". Their own galaxy will give them all they need in terms of observation and testing to determine all the basic laws of physics, and they will be able to speculate of course, but they will never be able to come to the Big Bang conclusion definitively - there will be no supporting evidence whatsoever about how the universe began or even IF  it ever had a beginning.

I thought that was all pretty interesting. If we were in that situation now, our universe would for all intents and purposes be utterly empty, aside from us and our own little galaxy, floating along in a vast sea of nothingness with no idea how large it is, and no idea how it began, and no way to determine it.

The religious people of the far far future will have a much easier time convincing people of their own versions of Creationism, and science won't ever be able to refute it. ;-)

*that would be tough to be them.
i would hope that maybe they'll figure out something from the radiation itself, but maybe that won't work.  hopefully, just their galaxy will be enough to grow on. 
we ourselves are only catching a glimpse as it is.  perhaps in a "smaller" environment they'll get more information from this environment that we might miss because of our larger view.

i have to agree with another earlier post that if it hadn't been for the crusades, the plague and the dark ages, the continuous destruction of whole civilizations in the west's past, we'd have been a starfaring civilization centuries ago.  but maybe not?  after all, china and india, japan and iraq, these have been continuous civilizations that managed to get into slumps like the ones in the west where progress was slow.

but as for religion being a cause of things, i see it more as a rallying point more than a cause.  there are certainly other organizations people unite under.  that is more about the peoples need to unite against or for a cause, than it is the rationale they use to justify their endeavors.  their endeavors satisfy an emotional need they have to do something.  whatever their endeavor is seems to me to be an afterthought as much as a cause.

go that way really fast.
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