Spacecraft docking is primarily performed to transfer crew and cargo between two spacecraft in orbit, enabling the exchange of personnel, supplies, and equipment.

NASA was the first space agency to successfully demonstrate spacecraft docking in 1966, during the Gemini 8 mission.

The Androgynous Peripheral Attachment System (APAS) is the most widely used spacecraft docking mechanism, employed by the International Space Station and various spacecraft.

Rendezvous refers to the precise alignment and positioning of two spacecraft in close proximity, typically within a few meters, prior to docking.

Soyuz TM-1 was the first spacecraft to dock with the International Space Station in 1998, marking a significant milestone in space exploration.

The Reaction Control System (RCS) is primarily used to control the relative motion of spacecraft during docking, providing precise maneuvering and attitude control.

The European Space Agency (ESA) developed the Automated Transfer Vehicle (ATV), a spacecraft designed for cargo delivery to the International Space Station.

Undocking refers to the process of separating two docked spacecraft, allowing them to move independently.

Apollo 12 was the first spacecraft to successfully dock with another spacecraft in lunar orbit, demonstrating the feasibility of lunar rendezvous and docking missions.

The Rendezvous Point is the designated location in space where two spacecraft meet and align for docking.

Roscosmos, the Russian space agency, developed the Progress spacecraft, a series of cargo spacecraft used to deliver supplies to the International Space Station.

Attitude Alignment refers to the process of aligning the attitude, or orientation, of two spacecraft prior to docking.

Intelsat 901 was the first spacecraft to successfully dock with another spacecraft in geostationary orbit, demonstrating the capability for on-orbit servicing and repair.

Crew Transfer refers to the process of transferring crew members between two docked spacecraft.

SpaceX, a private space company, developed the Dragon spacecraft, a reusable spacecraft capable of transporting crew and cargo to and from the International Space Station.