The normal component of acceleration is known as the "centripetal" component. It is proportional to the square of the speed, and inversely proportional to the radius of curvature of the path. The ...

One application of the law of gravity is to figure out how to put a satellite into orbit so that it remains in the same position relative to ground all the time. A satellite in such a position can be ...

TIM PEAKE:Hi I'm Tim Peake. I'm an astronaut based here at the European Space Agency, in Germany. And from December 2015 to June 2016, I spent six months orbiting Earth on the International Space ...