Soyuz 2 was an uncrewed spacecraft in the Soyuz family intended to be the target of a docking maneuver by the manned Soyuz 3 spacecraft. It was intended to be the first docking of a manned spacecraft in the Soviet space program. Although the two craft approached closely, the docking did not take place and the first successful Soviet docking of manned spacecraft took place in the joint Soyuz 4 and Soyuz 5 mission.

This is Soyuz's 9th flight.

The Soyuz is a Soviet crewed spaceship, developed to made manned lunar missions. This version called 7K will fly 4 times on the giant launcher N1, and several tens of times on Proton to fly over the Moon, which will be successful during the mission Zond 4. Soyuz will become the first spacecraft to transport living beings to the Moon during the flight of Zond 5, with two turtles. Subsequently, it is adapted to low orbit and will fly on the Soyuz launcher to serve the Salyut and Mir stations and the ISS.