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The first module of the Soviet space station Mir was launched, establishing the first long-term research station in space.

Historical image related to The first module of the Soviet space station Mir was launched, establishing the first long-term research station in space. from February 19, 1986

Mir Core Module

First module of the Soviet/Russian Mir space station

Mir, DOS-7, was the first module of the Soviet/Russian Mir space station complex, in low Earth orbit from 1986 to 2001. Generally referred to as either the core module or base block, the module was launched on 20 February 1986 on a Proton-K rocket from LC-200/39 at the Baikonur…
Source: Wikipedia (CC BY-SA)

Soviet space program

Space exploration program conducted by the Soviet Union from 1951 to 1991

The Soviet space program was the state space program of the Soviet Union, active from 1951 until the dissolution of the Soviet Union in 1991. Contrary to its competitors, which had their programs run under single coordinating agencies, the Soviet space program was divided…
Source: Wikipedia (CC BY-SA)

Mir

Soviet/Russian space station (1986–2001)

Mir was a space station operated in low Earth orbit from 1986 to 2001, first by the Soviet Union and later by the Russian Federation. Mir was the first modular space station and was assembled in orbit from 1986 to 1996. It had a greater mass than any previous spacecraft. At the…
Source: Wikipedia (CC BY-SA)