Perpetual Motion is a fundamental property of Energy.
Energy is perpetually in motion.
Energy is never at rest
Matter appears to be at rest relative to other matter.
This is a fundamental property of matter.
Matter in motion is measured as time, speed and distance.
Energy in motion is measured as Time, Space & Reality.
Time, Space & Reality are all in perpetual motion.
They never stand still for a moment.
When matter is in motion at any speed, over any time and for any distance, it creates entropy and experiences resistance.
Entropy is the nature of matter choosing to be its natural self.
The nature of matter is to be at rest, not in motion.
Because the motion of matter is determined by a finite time, speed and distance, it cannot have infinite or perpetual motion.
Even our planet, sun and galaxy appears to have a finite time, speed and distance within our relative, three-dimensional universe.
No galaxy, sun or planet exists in perpetual motion, only the Energy from which they are created is infinite, eternal and perpetually in motion.