He undertook further studies at the Gagarin Air Force Academy before being accepted into the space programme.

His next mission, in 1978, was Soyuz 28, the first Interkosmos flight, where he was accompanied by Vladimír Remek from Czechoslovakia.

[1] In 1971, Gubarev became backup commander for the ill-fated Soyuz 11 mission, which killed the three-man crew when the craft depressurized in space.

In 1980s, he worked at the 30th Central Scientific Research Institute, Ministry of Defence (Russia).

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