This is one of the first comic book stories I can remember reading. I’m pretty sure I read it as a reprint — I have no idea when/where it first saw print.
So, yeah, the Batman of the year 3000 — secret identity “Brane” (get it?) — tracks down the evil Saturnian overlord who has enslaved Earth, chases him into the upper atmosphere, and violent hypothermia ensues.
And I never in a million years thought I’d have to type those words in that specific order.
Gotta love the Science! Fun Fact™ tossed in there for the benefit of kids like Young Barry, eh? And my kindergarten teacher wondered why I was so twisted…
(From Batman Family #3, February 1976. Written by Unknown. Art by Dick Sprang and Jerry Robinson.)