
Originally Posted by
Primalredemption
It's a sphere, just like the globe except inside out.
The line represents your line of sight. The red area is where you cant see. So what you think of as the horizon is actually the central celestial sphere.
So in your animation the distance from the sun to the observer is dramatically different when the sun is rising and at noon. Based on what I observe about distant objects appearing smaller I would expect the sun to appear larger at noon than it does at dawn.
For the sun to appear as it is, it must be very far away so that the relative distance of sun at dawn and sun at noon are very close. But if the surface of the Earth is the entire outside of this geode, then we know the sun must be INSIDE the geode with us. And we know how far it is around the Earth. So the sun must be very small, and contained inside the geode with us. Therefore it must change observable size as it moves across the sky.
I don't think this model makes much sense. If the surface of the Earth surrounds the cosmos, sun, and moon, then those celestial bodies must be very small to fit inside our geode with us.
The more I think about it the less this model makes sense to me.