The module has an unusual feature where it cannot connect to some parts such as Connector Small to Small.
- In real life, the Soyuz spacecraft have 5 variants: the Soyuz, the Soyuz-T, the Soyuz-TM, the Soyuz-TMA, and the Soyuz-LOK.
- Apparently, there is an unlaunchable variant of the module known as the Soyuz Service Module, which is identical to its launchable counterpart.
- Except the Soyuz-LOK, others are designed to orbit Earth only.
- The Soyuz-LOK is used together with the Soyuz-LK lander to carry out the Soviet moon-landing plan, which never took place.
- The Soyuz-LOK used on the proposed Soviet moon-landing did not have solar panels, rather, it was powered by fuel cells, much like the Apollo missions. The variant with solar panels would be the 7K-L1 spacecraft, better known as "Zond". It was also longer than a normal Soyuz used in LEO.
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