The artificial satellite orbiting around the Sun does not fall down, the reason being is that the attraction of the Earth provides the necessary acceleration for its motion. This acceleration is constant in magnitude but changes its direction. The force acting towards the centre on a particle executing uniform circular motion is called Centripetal force and to balance the Centripetal force there is a pseudo force called Centrifugal force. In case of satellite orbiting around the earth, both these forces are equal and opposite.