This graphic shows how fast a rocket must go to leave every planet
Gravity makes it possible for us to live on Earth, but it also makes it pretty hard to leave. Satellites fight gravity by going just fast enough to free-fall around the planet indefinitely, like the International Space Station, with many traveling at speeds of more than 17,500 mph.
But if you want to leave this planet, you have to go faster. This speed is called the escape velocity.
And because other planets in our solar system have different gravitational strength, they each have different escape velocities.
Read the article:http://www.techinsider.io/rocket-escape-velocity-earth-planets-2016-05 #space #escapevelocity #nasa #gravity