Hey, I'm new on the forum and I have a pretty basic understanding of physics, I hope this question isn't obvious I just need some help getting my head around it. I was reading up on the problem with gravity of a means of generating perpetual energy, the fundamental problem being that gravitational potential energy is only generated through the original force required to separate an object from the centre of a gravitational field. Which of course is always more than the energy that can be harvested from the attraction. However what if you had an incredibly dense ball of matter that was stable and undergoing no atomic or molecular change, the opposing forces would generate thermal energy indefinitely no? Surely the opposing forces of the rapidly vibrating atoms and the infinite pull of gravity would create energy without consuming mass?