## The theory

As indicated in the articleThe-paradox-of-gravity-not-respecting-the-energy-conservation-principle/ satellites are subject to a double different force, the gravitational one and the centrifugal one. This implies that the nearer a satellite is orbiting around the earth, the faster it has to move to win the bigger gravitational force and the other way round. To better describe this idea we have to introduce the concept of angular moment. This is the product of the impulse of the satellite ( **I=mxv** where** I** is the impulse**, m** is the mass of the satellite and **v** its speed) and the distance of the satellite from the Earth, **R**. Read more