Dude, ever heard of perspective & vanishing point? Your eye can only see so far (to the horizon). If you'd pull up a telescope or zoom in with a nikon p-900 you'd be able to make the sun appear fully. It's the sun that moves, not the earth.

https://steemit.com/science/@switzerflatland/the-reality-of-the-fake-globe-fact-no-2