system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Can Superman breathe in space?

I’ve seen some adaptations that show Supes wearing a helmet with oxygen when he goes in space, while others make it seem like he survives just fine. Is he just holding his breath for a long time or does he just not need oxygen to survive?
gpt
He can *survive* in space, let's say. 

The suit is still a bit of a necessity, firstly because it shelters him from any hostile stuff like Kryptonite, secondly because if he strays too far from sunlight his powers will diminish, and thirdly because it has a radio that lets him stay in touch with people, and of course he can't *talk* in space.

 (it's actually a point in Kingdom Come that he can't talk in space, but Captain Marvel can because Screw You It's Magic)