Question

Two satellites A and B revolve around a planet in two coplanar circular orbits in the same sense

Answer 1

Satellites are man made celestial bodies that revolve around the earth's orbit. They are there for a scientific purpose of research.

These satellites are controlled by the astronauts who are inside it. There are even some satellites  which are controlled from the earth from.

Space stations and do not need astronauts to be inside them. They are more advanced and safe.