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Sure, the delay is known.>>>>
Also, perhaps our current state of the art technology wrt observing the
universe from our little earth is damn near pre embryonic wrt the grand
scheme of things... ;^)
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Usual observations from our perspective of the universe would require to
remove the effects of the delay, which is caused by the finite speed of
light.
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But this is not done.
Of course it is done!!!
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You have definitely never read any paper about astronomy, or the history
of astronomy. As a matter of fact one of the main issue in astronomy is
to determine the distance of objects as precisely as possible.
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Thomas, why are you constantly making up stuff of that kind? Is it malice
or stupidity?
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Both?
Hanlon's razor applies, I think.
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And for amusement: noting different delays of quasar fluctuations,
in passing through an Einstein lens, is a practical way
of establishing their cosmological distance,
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