Spherical beings with transparent shells whose food source is
  stray photons for treats and neutrinos for general consumption,
  born 'out there' and upon meeting another, do not speak but
  merely think. The light sensors see the thoughts as they happen,
  transparently as they do, and beings sync up their brain
  patterns as signs of understanding each other. Something like
  that. I have some odd "born in space" beings thing I came up
  with as a kid. tongue emoticon