There was a trope that circulated for a little while in SF that the universe is a lot smaller than we think and we're seeing all the way round it.
Kepler just found an exoplanet 17,000 light years away that looks just like Jupiter...
(Of course, while we haven't disproved the wrap around hologram theory, we've seen stars much further away, but it's still kind of weird to find a Jupiter twin that far away. Similar mass, almost the same orbital distance...I bet there's a little planet between it and its sun on which somebody is looking through a telescope and maybe even saying "Hey, that really distant exoplanet we just found...)
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