An orbital maneuver is a change in the trajectory or speed of a spacecraft while it is in orbit around a celestial body, such as a planet or moon. These maneuvers are essential for adjusting a spacecraft's path, allowing it to enter or exit an orbit, rendezvous with another spacecraft, or land on a surface. To perform an orbital maneuver, spacecraft use onboard propulsion systems to fire thrusters or engines at specific times. This controlled thrust alters the spacecraft's velocity and direction, enabling it to achieve its mission objectives, such as those seen in missions involving NASA, SpaceX, or the International Space Station.