The term used to describe how to measure how reflective the surface is, is the surface albedo. Surface albedo represents the ratio of irradiance reflected to the irradiance recieved by a surface. The proportion reflected is not only determined by properties of the surface itself, but also by the spectral and angular distribution of a solar radiation reaching the Earth's surface.
Answer: No it is not. It is part of Astronomy.
The Mississippi river runs through 10 states in total before emptying out in the gulf of Mexico.
