Originally posted by twhitehead
Except they are the same. Neither can be observed directly. There really is no difference between something observed today and something observed that was yesterday. Both are observations.
Your argument suggests that if a star is 4 light years away (and thus we can only observe what it looked like 4 years ago) then somehow our observations are less accur ...[text shortened]... sting that if a star is say 4 million light years away, then we don't really know if it exists.
You are not observing the distant past in a dating method while you are
observing gavity today. So I again "respectfully" disagree with you. Your
looking at light travel 4 light years away can be monitored in our life time
if you could really tell what partical started where and watched it travel to
here. Again, short distances that can be done and has been done, bouncing
signals off the moon for example, but longer distances we are assuming a lot.
Even if I were to agree that a star is 4 light years away, or 400 million, that
is still the distance from us it is now, not how long that star has been there.
If we don't know how it all started, how do you know the positions of all
things historically? Assuming you have an inkling about how it started allows
for that, but if you are wrong in your assumptions about that, than all your
views about this place should come into question.
Also don't you also believe time changes in rate? If that is true, then how do
you know how we should measure time, maybe it was faster, or slower than
we are aware of?
Kelly