In order to place a satellite in an orbit, it takes scientists a great amount of patience, precision and perseverance. Forget about the invention of satellites, it is way too far for me to comment on that. There are huge developments in the capabilities of the satellites in the modern world. But the point is how can something be placed in space at a particular orbit and the object follows a definitive path. Yes, it is science and we have answers. We also know that a slightest deviation in the orbit path would lead the satellite to escape from the gravitational laws.
And everything around us follow these rules so naturally and perfectly without any scientist. The smallest atoms to mighty galaxies, everything follows this orbital path and are constantly revolving.
This is a wonderful creation around us. We just have to follow the protocols of nature and nature would take care of us.