I mean, yes I'm assuming they follow the laws of physics. To my knowledge everything about them that we actually can observe does actually follow the laws of physics (including things like time dilation), and we can use what we do know to form a pretty solid hypothesis about what we don't.
I mean, I could argue that they're actually c'thulu eggs, and you can't prove me wrong because we can't look inside! ...but there's also no evidence to support that. Drawing conclusions about reality based on science fiction is silly. We ofc don't know everything about the universe, but we should stick with what real evidence actually supports.