> How about the fact that the stars of the universe are all red-shifted the 
> farther they get from *us*?

Once you have the information about the surrounding stars, isn't it quite 
trivial to show that from the point of view of *any* star, all other stars 
are red-shifted more the further away they are?

> Or the fact that we seem to be the only creatures in the entire *universe* 
> that broadcast radio signals?

Why the assumption that any intelligent lifeform would be broadcasting radio 
signals for any significant time in its existence?  To me that seems silly. 
Earth has been broadcasting radio for 100 years out of 4.5 billion, maybe we 
will continue to do so for another 10000 years until we find something 
better?  Those timescales are tiny compared to the variation in ages of 
other stars.

Also, really can you detect the radio signals from Earth more than a few 
light years away?  Isn't the signal going to be incredibly tiny and 
virtually impossible to detect?  And that's just a few light years, what 
about the other planets billions of light years away?

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