Probably this is due to the relative strength of the earth's gravitational energy.

There would be a gigantic release of gravitational potential energy.

The answer is that it was borrowed from the gravitational energy of the universe.

Instead, they are powered only by the gravitational potential energy released as material falls onto them.

Is the universe old enough for any sun to have used up its nuclear and gravitational energy?

As if the star's gravitational potential energy is being siphoned off.

Using infinity as the zero point results in a simple formula for gravitational potential energy.

An object gets gravitational potential energy when it moves uphill.

You can do this because you're only interested in changes in gravitational potential energy.

"These energy levels average out to be greater than the gravitational energy," he said.