The SVET (свет: Russian: light) plant growth system was a small greenhouse module on the Russian spacecraft MIR. Some of the first space vegetables and plants were grown on board this spacecraft. SVET was installed in 1990 and was located in the Kristall module of Mir and consisted of 4 basic units:
- the plant growth chamber itself
- the root module
- the light and control unit
- the GEMS (Gas Exchange Measurement System)
Plant varieties such as dwarf wheat and Brassica rapa were grown in SVET, with important variables being controlled and measured using these equipment. Substrate moisture was one of those being studied.
In Service: 1990 – 2001