Simplify the following text for a Grade 13 native English-speaking person.
Original: Under standard assumptions a body traveling along this trajectory will coast to infinity , arriving there with hyperbolic excess velocity relative to the central body . Similarly to parabolic trajectory all hyperbolic trajectories are also escape trajectories .
Simplified: A hyperbolic trajectory is a trajectory entered by a spacecraft when its velocity exceeds the escape velocity of a planet , satellite , or star .