I'm playing the new Lego Batman 3, and while everyone is outside of the Justice League Space Station, everyone is either wearing protective suits (Batman and Robin), or is already known to be able to survive in space (Superman, Green Lantern, Cyborg) except for The Flash.

I'm not up to speed on my DC comics, so can Flash really breathe in outer space? Is his cellular regeneration enough to keep him from dying? Or is this another permutation of the Speed Aura "protective bubble"?

  • I suspect it's just a permutation of the "game developers having a good time". Nov 12, 2014 at 1:04
  • I'd kind of think the same thing, but everyone else is protected except for him. I just found it odd and was curious if there was an "in universe" explanation.
    – krillgar
    Nov 12, 2014 at 1:06
  • 3
    Yeah, I wouldn't take anything from the Lego series too seriously. They prioritize the gag WAY above the science/canon.
    – Nerrolken
    Nov 12, 2014 at 1:07
  • 1
    At least in New 52 continuity (such as it is), prior to the Throne of Atlantis arc, Cyborg still had (at least) one lung. At Cyborg's request, his father does some work to change that so that he can go underwater. Nov 12, 2014 at 4:27
  • 1
    @Robert, A quick Google search turns up Flash #175 where Flash and Supes race to the edge of the Milky Way and back. I haven't read it to know the details of how the Flash is managing to travel interstellar distances, though.
    – Brian S
    Nov 12, 2014 at 19:12

4 Answers 4


Flash has never been demonstrated as being able to breathe in space, or to hold his breath for superhuman lengths of time.

His 'powers and abilities' section on Wikipedia doesn't mention anything about it, though it does mention that he has the ability to generate a field around himself that protects him and his clothes from air friction.

Most likely, this was simply an oversight. Batman/Robin frequently have costume changes, and part of the 'always prepared' reputation Batman has (which I expect the Lego games would play up on) could easily include a space suit.

In short, no, no one from the Flash family has been shown to be able to avoid the issues caused by low-pressure, low-oxygen environments such as space.

As a simple aside, Batman doesn't really need the suit:

From the webcomic Shortpacked


No. Portrayals of the Flash have rarely shown him to be able to survive in the vacuum of space.

  • This is the previous DCU's Wally West discovering he is outside on the surface of the moon. (Don't ask why Jeff Loeb thought they should be able to TALK or hear in the vacuum of space.)

enter image description here

enter image description here


I can make a case for a Flash capable of utilizing the Speed Force, being able to survive in the vacuum of space.

  • One of the Flash's powers allows him to become intangible to matter and able to ignore his environment. This power becomes active when he starts moving faster than the speed of sound.

  • Why the speed of sound? In atmosphere, the Flash's speed soon becomes problematic as distances diminish through the use of his fantastic speeds (i.e. 600 miles per hour becomes 1 mile per second!) At slower speeds his prioperception (personal awareness of his physical body in relationship to his surroundings) he can pay attention to his environment and dodge things he approaches, but once he moves at high mach speeds or low percentages of the speed of light, being intangible is the safest approach.

  • Imagine what happens when he approaches 1% the speed of light (6,706,166.29 miles per hour, 111,769.43 miles per second or the ability to circle the globe several times in a single second).

While the Speed Force supposedly protects the environment from him, what protects him from the environment?

  • His intangibility. As he approaches the speed of light, under normal physics, objects grow heavier as they approach the speed of light. Not the Flash. Why?

  • Because he is becoming more like light and less like matter. The faster he goes, the more he behaves like a beam of electromagnetic energy. Including becoming and remaining intangibly out of phase and safe from harm.

enter image description here

From Flash 109, one of the earliest uses of his molecular intangibility.

  • He would use his intangibility to protect people from the use of his power. Since he can vibrate his molecular structure and maintain complete control of it, there is no reason he couldn't exist in space as a vibrating molecular waveform, completely removed from the environment of space.

There may be a time limit to how long he could do this but I have not seen him have any difficulty maintaining his intangibility. In Kingdom Come, the Flash has become a form of omnipresent energy where "flesh and blood... give way to... energy"...

enter image description here

During Wally West's run as the Flash, approached the speed of light and the speed force so often he became a being composed of pure energy. Again, not saying Flash must be portrayed that way, but certainly there is ample precedent for saying Flash is an energy being and not subject to the ills of space. Near the end of the series, Wally West approached the speed of light so often he became a being composed of pure energy.

enter image description here

  • I can't disagree that there have been portrayals that liken him to an energy being, however these portrayals are all no longer canon (and were non-canon even before the DCNu52). Every portrayal of Flash since the mid-90s (including his portrayals in Justice League and JLU, and the various DC movies) has shown the speed force as being what prevents sonic booms (just because, not because of molecular vibration) and has shown him remaining physical at high speeds.
    – Jeff
    Nov 12, 2014 at 14:16

Perhaps the implication is that he is holding his breath for, say, 5/6 of the time, then phasing inside and taking a breath for the other 1/6. His idle animation does include him zooming away every so often.

  • 1
    This answer could be greatly improved if you edited in a relevant gif or video showing his idle animation.
    – TheLethalCarrot
    Sep 12, 2019 at 14:01

Yeah he ran across the universe faster than instant teleportation once, so it's established he can survive in space.

  • 2
    Could you edit in evidence for this? At least where he did this.
    – TheLethalCarrot
    Feb 26, 2020 at 11:43

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.