> So if you’re in intergalactic space, time is actually passing very quickly in the higher gravity environment of a galaxy. Not "very". Look up the actual equa

> So if you’re in intergalactic space, time is actually passing very quickly in the higher gravity environment of a galaxy. Not "very". Look up the actual equation, it's a really easy one. AFAIR for a standard stellar black hole, you'd need to be within meters from the event horizon to get any substantial time difference. Thus the implication that Interstellar's Gargantua was an SMBH, i.e. probably the center of it's galaxy.