So I'm watching the sky at daytime, and i see the moon. The shadow on the surface of the moon goes in a straight line. I therefore conclude that the angle of MeMoonSun must be 90 degrees. But a peculiar thing shows; The shadow line on the moon is not perpendicular to the straight line between the sun and the moon! This is strange... considering a basket ball and a flashlight, i cannot get the same result. Why is this? Is it because of General relativity?