according to the second law of  thermodynamics such a planetary machine can never exist."
according to the second law of  thermodynamics such a planetary machine can never exist."
second law of thermodynamics:38
second law of thermodynamics
it refers to a cycle of a carnot heat engine, fictively operated in the limiting mode of extreme slowness known as quasi-static, so that the heat and work transfers are between subsystems that are always in their own internal states of thermodynamic equilibrium.