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Valeri Polyakov

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Valeri Polyakov was a pioneering Soviet and Russian cosmonaut and medical doctor. He is most famous for holding the record for the longest single stay in space. During one continuous trip, he lived aboard the Mir space station for 437 days, 18 hours. His total time in space across all missions exceeded 22 months. Polyakov used his medical expertise to study how humans survive in extreme environments. His work was vital for planning much longer journeys into the solar system.

Cosmonaut Polyakov Watches Discovery's Rendezvous With Mir - GPN-2002-000078
Cosmonaut Polyakov Watches Discovery's Rendezvous With Mir - GPN-2002-000078

Polyakov's primary mission was to study the effects of micro-gravity on the human body. Micro-gravity is a condition where there is very little gravitational pull. He volunteered for long missions to see if humans could handle the transit to Mars. During his record-breaking flight, he completed over 7,000 orbits of the Earth. He conducted various scientific experiments to monitor his own physical and mental health. This research helped scientists understand how the body adapts to living without constant gravity.

Soyuz TM-18 patch
Soyuz TM-18 patch

His career involved two major spaceflights using the Soyuz spacecraft system. His first mission launched on Soyuz TM-6 in 1988. He spent 240 days in space and returned to Earth aboard Soyuz TM-7.

Soyuz TM-6 patch
Soyuz TM-6 patch
Soyuz TM-7 patch
Soyuz TM-7 patch

His second mission was even more significant for space exploration. This flight began on 8 January 1994, using the Soyuz TM-18 mission. He stayed in orbit until 22 March 1995, when he landed with Soyuz TM-20.

Soyuz TM-18 patch
Soyuz TM-18 patch
Soyuz TM-20 patch
Soyuz TM-20 patch

Polyakov's journey into space medicine began with his early education. He was born in Tula in 1942 as Valeri Ivanovich Korshunov. He later changed his name after being adopted by his stepfather in 1957. He earned a doctoral degree from the I. M. Sechenov 1st Moscow Medical Institute. In 1964, he specialized in astronautics medicine at the Institute of Medical and Biological Problems. This specialization was inspired by the flight of Boris Yegorov, the first physician in space. Polyakov was then selected as a cosmonaut in 1972.

On 9 January 1995, Polyakov achieved a major milestone in space history. He officially broke the record for the longest spaceflight duration. This record was previously held by Vladimir Titov and Musa Manarov. His 437-day stay proved that humans could endure very long periods in orbit. Upon his return to Earth, he made a deliberate choice to demonstrate his strength. Instead of being carried, he walked the short distance from his capsule to a lawn chair. He wanted to prove that humans could remain physically capable of working on the Martian surface.

Medical researchers analyzed Polyakov's data to understand the psychological effects of space travel. They compared his medical exams from before, during, and after the flight. The results showed that his cognitive functions, or thinking abilities, remained intact. However, researchers did notice changes in his emotional state. He experienced a decline in mood during the first few weeks of his mission. He also felt an increased workload during the return to Earth. Fortunately, his mood stabilized between the second and fourteenth month of his stay. This data proved that a stable mood can be maintained during long-duration missions.

Polyakov's legacy continues to influence how we prepare for deep space exploration. He retired from his cosmonaut position in June 1995 with 678 total days in space. His cumulative record stood until 1999, when Sergei Avdeyev reached 747 days. Polyakov also served as the Deputy Director of the Ministry of Public Health in Moscow. He helped oversee the medical aspects of many long-duration space missions. He received many honors, including the Hero of the Soviet Union and the Hero of the Russian Federation. His life's work provided a roadmap for the future of human travel to other planets.

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File:Soyuz TM-6 patch.svg
Soyuz TM-6 patch.svg
File:Soyuz TM-7 patch.png
Soyuz TM-7 patch.png
File:Soyuz TM-18 patch.png
Soyuz TM-18 patch.png
File:Soyuz TM-20 patch.png
Soyuz TM-20 patch.png
File:Cosmonaut Polyakov Watches Discovery's Rendezvous With Mir - GPN-2002-000078.jpg
Cosmonaut Polyakov Watches Discovery's...
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