Re: Neil deGrasse Tyson helps Superman locate Krypton
I always took Krypton to be pretty far away in a galactic or intergalactic scale. 27 light years is a bit close, though I suppose it does make sense in the context of the story. (Apparently this somewhat reworked Supes is 27 years old and wishes to observe a certain event.)
"Sooner or later we're all someone's dog."