High Quality Content by WIKIPEDIA articles! In physics, Gauss`s law for gravity, also known as Gauss`s flux theorem for gravity, is a law of physics which is essentially equivalent to Newton`s law of universal gravitation. Although Gauss`s law for gravity is physically equivalent to Newton`s law, there are many situations where Gauss`s law for gravity offers a more convenient and simple way to do a calculation than Newton`s law.