Escape velocity: Learn what escape velocity is

Learn what escape velocity is, how it is calculated, and why it is important for spaceflight. Find out the escape velocity from Earth and other planets, and how it relates to conservation of energy and gravity. Escape velocity , in astronomy and space exploration, the velocity needed for a body to escape from a gravitational centre of attraction without undergoing any further acceleration. The escape velocity vesc is expressed as vesc = 2GM r ,where G is the gravitational constant, M is the mass of the What is escape velocity . How to derive its equation and calculate its value for Earth. Compare the escape velocities of several planetary bodies and the sun.