Died yesterday age 82, in his home.
You may not recognize the name, but he was the first German in space - as a komonaut on the Soviet Salyut 6 space station. His ticket to space was given out by the Soviet Union's "Interkosmos" program, by which "brother states" in the Warsaw Pact received one free kosmonaut ticket each. He went to Space in August and September 1878, for 7 days. His West German counterpart, Ulrich Merbold, only made it to space on the Spacelab-1 mission aboard STS-9 Columbia in 1983, becoming the first Non-American astronaut and travelling under the command of John Young.
Jähn's biography is a strange mirror of recent German history. He was one of the Volksarmee's top fighter pilots, it is quite possible he would have flown attacks against his Western compatriots in the case of an East-Western confrontation (not that it would have mattered much amid general nuclear devastation, but still). As a high officer in the Volksarmee, he became jobless after unification, before ESA thought of him and his old Soviet contacts and made him a liaison officer for the ESA-Roskosmos Mir programme training European astronatuts in Star City near Moscow.
Even though he made a career being a loyal soldier of Socialism, he seems to have come to terms with his post-unification world. He was always highly supportive of his "pupils" in Star City, and he called Alexander Gerst, our latest Teutonic contribution to the astronaut corps, a friend and a worthy successor as a scientist, engineer, and spacefarer.
May you rest in peace, Sigmund.