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Aug 10, 2016 at 4:39 comment added benrg @BenCrowell Quantum mechanically, only finitely many photons will reach us from distant objects, so there will be a last photon. But classically, this answer is correct: the light from distant objects is redshifted into the indefinite future and never completely disappears (like that of objects falling into a black hole, and for more or less the same reason).
Aug 5, 2011 at 1:29 comment added user4552 "Every bit of the universe we see today is in principle observable in the future." This is incorrect, for the reasons explained by Dragan Huterer.
Feb 18, 2011 at 3:43 history answered Lawrence B. Crowell CC BY-SA 2.5