There are so many experiments that can be done that would never fit in this small post.

In "my" theory, at 500 km altitude you can perfectly see the Earth curvature (without any "fish-eye" lenses), you can cover the whole Earth surface with imagery, you can prove the microgravity, you can prove how the Earth spins, you can prove the Earth orbits the Sun, you can prove general relativity, and so on.

Or, more important for Flat Earth Society, you can prove all my sentences above are wrong.