gravitational field

A lucky few made it past the gravitational field of the sun.

Is the ball under the influence of the Earth's gravitational field?

It was not designed to work in a planet's gravitational field.

It's something to do with unstable points in the earth's gravitational field.

Thus, in a sense, the gravitational field has negative energy.

With all the action you would expect of someone trying to handle a gravitational field he isn't used to?

The ship would have been caught by its gravitational field in around 30 or 40 years.

He wondered just what it would be like to experience a real gravitational field again.

Gas is heated by the fall into the strong gravitational field.

As I have already said, the strong gravitational field in which you live is the cause of this difficulty.