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Originally Posted by dyna mo
i see. even so, shouldn't we be able to see the earth in the ghost image though? as i understand it, telescopes are powerful enough that we can see almost back to the big bang, within less than a second i believe.
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You could if you could move the telescope across the universe far enough to see the light that left the earth in the past and would then allow you to see it. Its one of the problems with faster than light travel, and how you would then see ghost images of the past in far off places.