The fact that this episode references Timewave is both depressing and illuminating. I was waiting for Rimmer to blurt out "PLANET RIMMER!?" when Lister mentioned the Helium 7. However, I will be okay with Timewave's very existence if this does in fact confirm that the boys are literally "on the outer reaches of the solar system" or whatever Timewave suggested. Earth (or what's left of it after M-Corp) is surely not far from reach now.