To leave the gravitational pull of the Earth, and explore other planets, satellites must have at least:
A) circular satellite velocity
B) escape velocity
C) perigee velocity
D) three orbit perturbation
E) the permission of one Congressional committee

Question

Quizplus · Accepted Answer

To leave the gravitational pull of the Earth and explore other planets, satellites must have the escape velocity, which is the minimum speed needed to escape from the gravitational attraction of a massive body such as the Earth. It is the velocity required to move a spacecraft or object beyond the gravitational pull of a planet, moon or other celestial body without any additional propulsion.

To Leave the Gravitational Pull of the Earth, and Explore