Soyuz 2A

Soyuz 2A is the unofficial designation for a cancelled space flight of the Soyuz spacecraft. It would have flown alongside the Soyuz 1 mission, except for a technical reasons the flight was cancelled, which resulted in saving the lives of the crew.

In the Soviet space program it was usual only for successful launches to gain official designations, so this mission did not receive an official designation and is informally named Soyuz 2A to distinguish it from the official Soyuz 2 mission, which was launched in October 1968 as an unmanned docking target for Soyuz 3.