Here at the edge of the lunar eclipse shadows cast by the Earth to the Moon, it is always an arc of a circle, and the only body capable of providing a shadow at any position and direction of the light source, there is a ball. Can think?
If you are of the opinion that this is a realistic straight level all help is beyond reasoning.
So, how big is your standard level on that 25,000 mile level above? Find the blue dot to take a gander at it.
