When you’re in the ISS you’re not in zero G. You’re in free fall or microgravity. Same phenomenon as the vomit comet.
Discussion
No actual meaningful difference
It’s more or less the same but it’s not technically no gravity like the flat earther meme is implying
There is no such thing as "no gravity" at all. Given that all the objects in the universe are in perpetual motion relative to each other, there isn't a single static point at which the overall gravity is zero for any length of time.
I think the only notable difference is, that a man in a 90-minute orbit would observe a rotation around one of his axes by 4 degrees per minute (360degrees / 90 minutes).
Lagrange Points...
I knew that would be coming. But the Lagrange points aren't static even in the extremely limited system of just Sun, earth, and mood, let alone the other planets. And I was talking about the univere. There's a bit too many objects there, generating gravitational pull…
How long do I have to be in free fall microgravity until my hair turns into a cement brick?
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I've been playing Prey (2017) lately, on the space station there is an interconnected series of tubes that retain microgravity (instead of artificial gravity) for moving heavy freight around the space station. I thought about that concept for two days...