The Soyuz 7K-T is a Soviet spacecraft designed for crewed missions to low Earth orbit. It was part of the Soyuz program, which aimed to transport astronauts to and from space. The spacecraft features a three-module design, including an orbital module, a reentry module, and a service module, allowing for various mission profiles. Launched in the late 1960s, the Soyuz 7K-T was instrumental in the early stages of human spaceflight. It supported missions such as the Soyuz 4 and Soyuz 5, which were significant for docking operations in space. The design laid the groundwork for future Soyuz variants still in use today.