[SmokingJoe]

Also, an interesting thing is that the gravity field at the ISS is almost as strong as on the ground.

I think you are confused. You don't float when gravity is the same as on earth. Otherwise we'll ail be floating.
Do you float in your house everyday?

[PreciousLiberty]

Weren’t you the one who posted the gravitational equation? lol

The gravity field strength ratio is thus proportional to the distance to the Earth’s center, squared. The Earth’s radius is 3,963 miles, and the ISS orbits 600 miles further out.. So, the ratio of the strength is:

3,963^2 / (3,963+600)^2 = .76, or 76%.

The reason it acts like “no gravity” is because the spacecraft is falling around the Earth, it’s just not hitting it (we call this state orbiting). So, free-fall.

The same principle is at play with the “Vomit Comet” aircraft, or an elevator when the cable snaps, friction neglected.