The phenomena associated with the moon prove that the earth is round.
Part 1: The moon is not self-lumenescent. One can purchase a small telescope or a good pair of binoculars and see the shadows cast by crater walls. A self-lumenescent object can't cast shadows on itself.
Part 2: The moon has to, then, be lit by something else. Namely, then sun, largely because it's the only thing in our vicinity that can put out that much light.
Therefore, for the moon to be lit by the sun in the FE theory, according to the laws of physics and optics, the moon must be both higher than the sun, and larger.
This causes four problems
1)The sun is either not a disk, or luminescent on both sides
2)The moon could not have phases. It would be fully lit by the sun at all times.
3)A solar eclipse would be impossible, because the moon cannot come between the sun and the earth. If it did, it would appear to grow larger, which is could not.
4)A Lunar eclipse would be an utter impossiblity, because the earth CANNOT go between the moon and the sun in the FE theory, and even if it could, we would NEVER be able to see it.
Now. Issue 1 can be argued. Everybody has observed that the moon has phases. Most people have seen at least a partial solar eclipse, and many people (including myself) have observed a lunar eclipse.
If we have a moon that behaves the way it does, the earth must be round
Arguments?