[philman_36]

If Earth is a flat disk, why is every other heavenly body a sphere?
Why do you believe every other heavenly body is a sphere?

Why have we never observed another disk world in all our explorations?
What explorations are you talking about?

See above...inbound objects moving at more than 100,000 miles per second are stopped yet we can penetrate this barrier with a rocket? How is that possible?

Did fact catch up with fiction?

[Windflier]

Why do you believe every other heavenly body is a sphere?

I think I see the problem here. You've rejected the fruits of your own observations.

As a person living in modern times, there's no doubt you've seen photos of the other planets that have been captured by our many deep space missions. Those photos clearly show spherical planets.

But you don't need a deep space mission to see that for yourself. Just watch the moon go through its phases, or point a low powered telescope (or even binoculars} at the moon sometime, and you can easily see the spherical curvature of that body.

But if you trust a theory over what you see with your own eyes, there's nothing anyone can do to help you.

[Windflier]

...inbound objects moving at more than 100,000 miles per second are stopped yet we can penetrate this barrier with a rocket? How is that possible?

Because the "barrier" proposed in that theory, is a figment of some miseducated drug addict's revered imagination.