The kite was directly above their heads, a true celestial object, launched out of the world's gravity.

We have cleared cislunar space and will be out of Hyperion's critical gravity well within ten minutes.

A ship climbing out of a planet's gravity well on fusion power is rather obvious," he said.

It just takes a lot of effort to push all this air up out of Earth's gravity well, that's all.

Lifting heavy spacecraft and fuel out of the Earth's gravity is expensive.

It had also flung something completely out of Diadem's gravity well.

It took us a week at one gee just to get far enough out of the solar system's gravity well to use the hyperdrive.

Apollo-11 was the first practical method for getting out of the Earth's gravity well altogether.

Getting out of earth's gravity well was too expensive to spend the acceleration on suitcases.

If we can just get the Liar off the ring, the ring's rotation will fling it, and us, out of the star's gravity well.