Hi, I understand how centripetal force works and all. But I still don't understand, when looking at a satellite orbiting the Earth, the only force acting is its weight, which is in the direction of the Earth. How does its circular motion start in the first place? If the only force there is is acting towards the Earth, why doesn't it just move towards the Earth? Surely something must happen to get the circular spin to begin, like with a hammer thrower, they spin it physically to begin the motion. Why does a fixed distance remain from the Earth? And also, why does its speed not change at all?