The good news is that energy is saved. The bad news is that disorder increases.
Where does the solar system come into all of this?
Order and disorder. Two seemingly abstract concepts. Or should that be a single concept? They are opposites, after all. But scratch under the surface and they have very concrete foundations. Foundations on which the entire universe stands.
If energy is the engine, then order —or rather the journey from order to disorder and vice versa— is the steering wheel, the accelerator of the universe and all its transformations.
Two of the fundamental laws of scientific knowledge are based on energy and disorder: the first and second laws of thermodynamics. The first affirms that the energy in a system is always saved. For example, the energy saved in the chemical bonds in the fuel in your car turns into heat. This becomes mechanical energy, it makes the car’s wheels go round and it turns into heat again, then disperses.