I wonder why when flying in a plane you see the curvature of the Earth? Things that have large mass pull other thing into it's orbit.
There is debate as to what the firmament was. Some say it was a water canopy that enclosed the earth to protect the environment.
multiple proofs that you can't. what you are seeing is a view thru a fish-eye lens. high altitude balloons without fish eye lenses do not see it.
But here is the thing the gravitational constant actually ignores the mass of the objects! It has been adjusted to 'make it fit' and since it disregards the mass of the object, they adjust it to make it work.
hard to say, but a rainbow can only be recreated by having a mirror above the light source.
check out this guy he makes some great points.
i could go on all day, but the big proof to me, is all the ball earth theories come from government agencies, there is absolutely no proof you can do yourself.
and i love this idea... seems to make sense to me.