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