Here's a never-reprinted tale...
...about the perils of exploring Inner (rather than Outer) Space, illustrated by a most unexpected artist!
This short story from Charlton's Space Adventures #12 (1954) was one of the last tales penciled by Superman co-creator Joe Shuster, who ended his comics career doing work for Fawcett and Charlton.
The inker was Spurs Jackson's John Belfi, but the writer is unknown.
BTW, when I said the story was "never-reprinted", I was somewhat incorrect.
(Yeah, it's hard to believe, but true!)
While the tale itself has never been re-presented in print, the splash page was modified and used as the cover for IW's Jet Power #1 (1958), which reprinted material from Magazine Enterprises' Jet and Space Ace comics!