A launch vehicle provides the velocity needed by a spacecraft to escape Earth's gravity and set it on its course for Mars.

The object became the first American spacecraft to escape the Earth's gravity.

Water molecules would have escaped Earth's gravity more easily when it was less massive during its formation.

With satellites, the object is not to escape Earth's gravity, but to balance it.

It is an extremely compact massive object so dense that nothing, not even light, can escape its gravity.

Acorna could only imagine that the monster ships would need to escape the planet's gravity well.

It would be a little while before Voyager escaped the system's gravity well and the helmsman was able to engage the more powerful warp drive.

Thus, if you moved upward at a constant velocity of 5 mph you would eventually escape the earth's gravity.

The shuttle is too low on power to escape the planet's gravity or even to achieve a stable orbit.

Now all that remained was to escape the planet's gravity and evade its lethal artillery long enough to go to warp speed.