That's totally a myth. He gets his powers from eating Wheaties, just like everyone else.Superman gets his "super powers" from the solar radiation... of our YELLOW sun... so he as soon as he's "so far" away from a yellow star he loses his powers and explodes in deep space... even Superman has his limits... jeez. n00b.
Also, I'm not even going to attempt to debate you about the big bang, since you'll just ignore my points anyways. I'll just say that you're wrong, and if you do a little research on the big bang or how science works you'll find out why.