That light (much dimmer than normal moonlight) is from the Earth. Shadows are caused by sunlight, and since the Sun shines on the Moon, there must be shadows. In fact you can determine the height of objects on the Moon by the length of their shadows (just like on Earth). I'm not certain what you're referring to here. If you mean that pictures on the Moon show a black sky, you should know that there isn't an atmosphere on the Moon to reflect sunlight, so its sky always looks black. The surface of the Moon, however, does reflect sunlight, so the surface facing the Sun is well-lit, and that side is experiencing daytime. (Think about the definition of day and night on Earth.) How much water was in the hole that the crater made that hit the Moon? Water was found to exist as very small, very spread out ice crystals in craters on the north and south poles of the Moon. Craters are the result of ancient meteorites that hit the Moon's surface. The amount of ice is very uncertain, but estimates are 10 - 300 million tons spread over the polar regions. What is the name of the force that causes meteorites to impact on the Moon? Is it gravity? The short answer is "no". Not directly at least. Meteoroids impact the Moon (the Earth, and other planets) because the trajectory of their orbits and that of the Moon intersect. Of course, gravity is responsible for the shape