Corrected entry: Baby superman's Christmas ornament spacecraft can travel right through a sun but the pointy things all around it shrivel and burn when it hits earth's atmosphere?
Corrected entry: This is only a mistake if you watch the extended version: Superman walks through Lex's 'gauntlet of doom' where machine guns, flame throwers and sub zero blasts are used to try and deter him. The mistake is that Lex Luthor is controlling all this and he and Otis seem to expect it to work, and are surprised when Superman isn't harmed. Yet earlier Lex and Otis both established that "fire and bullets can't hurt this guy". Richard Donner and Tom Mankiewicz argue about this scene on the commentary.