Elite: Dangerous PvE - Mobius

Thanks! A question I forgot to pose in my initial post - what's the difference between Mobius and Mobius PvE? I'm guessing one is open world and the other is private group?

Greetings fellow commanders. Coming back to Elite after a long absence. Brand new save (didn't have anything really). Played with a buddy for a bit during beta and release, but never really got into it. Usually played solo or with him, never in open world - heard the horror stories. Anyway, I found ...