If the so called ISS is orbiting or falling around the Earth like we are told then something must be acting on it to push it away as the so called gravity of Earth tries to pull it down.
Now if it's the speed of the ISS that keeps it up it must require something more than gravity. Why?
Well, if we are told that an aeroplane stays up high by going fast around Earth's supposed ball shape and it also uses the atmosphere to give it lift to keep it orbiting against the so called pull of gravity, then surely your space should have something more for the ISS.
Any ideas?
Imagine you are moving forward at constant speed. A constant force appears on you in direction from your left to your right (always perpendicular to your forward movement). What will happen? You will start moving in curved lines, circles as special case.