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

I think the answer is no, or rather, he doesn't need to. He's traversed open space numerous times without any problems, and I've never seen him visibly inhale or exhale while doing so. However, I recently got around to seeing Infinity War and >!when he's out in space restarting the forge at Nidavellir,!< I am almost 100&#37; sure I saw him visibly breathing (mouth open, chest rising and falling). Unfortunately I couldn't find any clips online to verify I saw it correctly, but assuming I did, what gives?
gpt
The act of breathing is habit for him whether there is air or not. He doesn't need it at least for the short amounts of time we see him in vacuum. Whether he needs to breathe at all or only once an hour or something remains to be seen.