Yeah, there was Interstellar influence here. I think that movie has changed the way people imagine black holes now.
I remember questioning the physics in the movie too, like the giant wave that came and went on one of the planets, surely the water would all be rushing towards it before it arrived and the characters would have been dragged towards it, and if it were close enough for gravity to pull the water that high then I'd assume it would be tidally locked to Gargantua and in which case the huge mountain of water would just stay in the same spot (man that would be even weirder to think about!) also I never got the explanation behind the ice planet which had what appeared to be floating rocks hidden in clouds. But I remember talking about this with someone else who knew a little more about the movie before, and they said that the director did create some physics of their own just for the sake of coolness, much like what I did here