Valery Polyakov spent a document 437 days in house between January 1994 and March 1995.
He and two others blasted off on a two-day flight to the Soviet house station MIR and whereas aboard, he orbited the Earth greater than 7,000 instances.
Upon touchdown, Mr Polyakov declined to be carried out of the Soyuz capsule, as is frequent follow to permit readjustment to the pull of gravity.
He was helped to climb out himself and he walked to a close-by transport car.
Mr Polyakov had educated as a doctor and needed to reveal that the human physique might endure prolonged intervals in house.
The announcement by house company Roscosmos didn’t state a reason for demise.
Mr Polyakov was born in Tula in 1942. He specialised in astronautics drugs and devoted himself to house drugs after incomes a doctoral diploma at a Moscow medical faculty.
“His analysis has helped show that the human physique is able to journey not solely to Earth’s orbit, but in addition into deep house,” Roscosmos stated in a press release, the Moscow Occasions reviews.
In an interview shared by Roscosmos, Mr Polyakov stated the 280 million kilometers he had amassed in his 437 consecutive days in house “is sufficient to attain Mars and are available again”.
Mr Polyakov made a complete of two house expeditions, throughout which he spent 678 days and 16 hours in orbit.
He was awarded the title Hero of the Soviet Union for his first house flight from August 1988 to April 1989, the place he spent 240 days and 22 hours in orbit.