Satellite (artificial) Orbits
To stay in orbit, the satellite's sideways speed must balance the force of gravity. Closer to the Earth, in LEO, the satellites must move faster to stay in orbit. Low orbits work well for satellites that take pictures of the Earth. It is easier to put a satellite in low Earth orbit, but the satellite appears to move when viewed from Earth. But constantly changing positions does not work for satellite TV and other types of satellites that send and receive a lot of information. Those need to be in geostationary orbit.