Do not forget that a collision is just an interaction of two objects through a force. Gravitational slingshot maneuvers are a way to bounce a spacecraft off of

Do not forget that a collision is just an interaction of two objects through a force. Gravitational slingshot maneuvers are a way to bounce a spacecraft off of a planet using gravity as the force. Kind of like bouncing a ball off a fast moving car and seeing it fly off at high speed. A theoretical black hole in our outer solar system would do something similar to low mass objects such as comets and asteroids as well as interstellar gasses.