Gravity Keeps Planets on our solar system orbiting around the sun, even tho our galaxy is moving at an extremely high speed, this motion is relative, and since interstellar medium has almost no friction and no neighboring galaxy is close enough to our own to cause gravitational disturbances our galaxies ride through space is quite undisturbed.
power
The Gravity and Rotation in our solar system.
The Circulatory System......
Peristalsis.
Even application of duct tape keeps them not only together but balenced.
The force of gravity, which acts over immense distances, keeps the solar system's components in fairly stable orbits around a common center of gravity. The solar system itself is constantly moving - as the sun is in orbit around the galactic nucleus, and also the galaxy bound in a galactic cluster and larger supercluster, all of which possess intrinsic motions.
keeps blood moving through the heart and vessels
The bonds between atoms
a membrane
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your heart is a pump and keeps the blood flowing
The pumping of the heart keeps the blood moving