The lowest velocity which a body must have in order to escape the gravitational attraction of a particular planet or other object.
逃逸速度，脱离速度，第二宇宙速度
Example sentencesExamples
The work presented in these two papers formed the basis for a later study of black holes, showing that bodies of sufficiently large mass would have an escape velocity exceeding the speed of light and so could not be seen.
If the object slows down below a minimum orbital velocity, it will hit the planet; if it speeds up beyond a maximum escape velocity, it will move away from the planet permanently.
Both NASA and the Russian Space Agency were still playing around with chemical rockets, trying to beat the seventeen-thousand mile an hour escape velocity.
The underlying concept is simple: the launcher accelerates the capsule to escape velocity.
What would happen if the escape velocity of a planet were greater than the speed of light?
Definition of escape velocity in US English:
escape velocity
nounəˈskāp vəˌläsədē
The lowest velocity which a body must have in order to escape the gravitational attraction of a particular planet or other object.
逃逸速度，脱离速度，第二宇宙速度
Example sentencesExamples
Both NASA and the Russian Space Agency were still playing around with chemical rockets, trying to beat the seventeen-thousand mile an hour escape velocity.
If the object slows down below a minimum orbital velocity, it will hit the planet; if it speeds up beyond a maximum escape velocity, it will move away from the planet permanently.
The underlying concept is simple: the launcher accelerates the capsule to escape velocity.
The work presented in these two papers formed the basis for a later study of black holes, showing that bodies of sufficiently large mass would have an escape velocity exceeding the speed of light and so could not be seen.
What would happen if the escape velocity of a planet were greater than the speed of light?