Now we're happily eating whatever foods we can out there. No
  need for oxygen and nitrogen to eat btw - we will need other
  things to breath and eat but its otherwise the same. But Now,
  you meet another being like you. How do you communicate? Well,
  no air. Hm. You could physically connect and share vibrations -
  that's sound. Or, you could use the way your brain communicates
  with its nerves - el...ectrons and photons. Without gravity
  getting in the way, or pesky background noise (ambient light),
  otherwise subtle changes in photonic energy would be visible
  through the senses of the fellow being. Your thoughts would be
  transparent. Did I mention that we were transparent? I should
  have mentioned that. "