English: Schematic example for inertial space trajectories by the Sun, with coincided perihelion points (P). The Sun must be in the focus point of each curve, which are elements of a conic section set. The velocities of a space object on these trajectories at the P point are growing in this order: circle (yellow), ellipses (red), parabola (blue), hyperbolae (green). (The white object represents a comet.) An object flying on the blue or green trajectories leaves the Solar System.