That's the classical view of our night sky. The diameter of the moon is 3474 km and it's a coincidence that looking from the Earth it appears to be the same size as the sun which is 400 times bigger but also 400 times further away from us.

That's the classical view of our night sky. The diameter of the moon is 3474 km and it's a coincidence that looking from the Earth it appears to be the same size as the sun which is 400 times bigger but also 400 times further away from us.