I've been studying Cosmology, albeit at a very laymen's level. I find it interesting, if not a little confusing, that galaxies are allowed under GR to recede from each other at speeds greater than c. One of the explanations given (from Leonard Susskind's video lectures on cosmology) was because GR doesn't forbid objects at cosmological distances moving away from us with speeds > c, it just says that no information can be passed on at speeds > c and we can't see anything moving past us locally with speeds > c. I've heard of a few other explanations such as distant galaxies aren't actually 'moving' wrt us but the space is expanding, and so it is 'ok' for the space to between them to grow >c. But from my study into Cosmology this does not seem to be the case. It's simply that everything is moving away from everything else. So I was wondering if someone could help me understand this better and why something in the distance can move away from me at speeds > c but something locally can not.