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 == Edit Request. == 

 The introduction contains an obvious error: 
 ""The farthest distance that it is theoretically possible for humans to see, called the observable universe, is about 93 billion light years in diameter."" 
 We can NOT observe ANYTHING at that distance.  Claiming that it IS theoretically possible to see 93 Gly is first confusing, since the referenced distance should be a radius of 46.5 Gly from us and since NOTHING that is ""now"" at 46 Gly will ever be in our future light cone. 
 Some of the objects that are ""now"" at 46 Gly, we can observe as they WERE at 13.5 Gya, but have since moved out of our area of observation (I am not sure I have that terminology right).  Expansion of the Universe makes anything at 40 Gly beyond the 'edge' of our Universe (unless expansion stops or reverses).  This article just simply needs to deal with the conflation of time and distance.  It is space-time, you know. 
 Bottom-line: There is NO theoretical possibility to see objects at 93 Gly.  There is NO theoretical possibility to see objects at 46.5 Gly.  We can ""see"" objects as they were at a distance of 13.5 Gly at a time of 13.5 Gya which because of the expansion of space-time we believe now are 46.5 Gly from us. It would be helpful to also note the theoretical furthest distance that a Supernova (which should be visible throughout the Universe) if it went off today, could be for its light to ever reach us.  It might also be useful, but probably not in the introduction, to point out that if expansion ever stops, that in a static universe, eventually everything will be within our light cone, and our sky will be filled with light. And so, the ""furthest possible observable"" depends on assumptions about expansion."