<P> Note: While Young has made six spaceflights, he was launched into orbit seven times if his moon ascent on Apollo 16 is counted . </P> <P> * Dual citizen . </P> <P> Gennady Padalka, who has spent 879 days in space over 5 missions, became the man who spent the most time in space when he surpassed, on 28 June 2015, the record of Sergei Krikalev who spent 803 days, 9 hours and 39 minutes, or 2.2 years in space over the span of six spaceflights on Soyuz, the Space Shuttle, Mir, and the International Space Station . Currently, second is Yuri Malenchenko who spent 828 days in space on six spaceflights . </P> <Table> <Tr> <Th> #</Th> <Th> Time in space </Th> <Th> Crew </Th> <Th> Country </Th> <Th> Launch date (Launch craft) </Th> <Th> Landing date (Landing craft) </Th> <Th> Space station or mission type </Th> </Tr> <Tr> <Td> </Td> <Td> 437.7 days </Td> <Td> Valeri Polyakov </Td> <Td> Russia </Td> <Td> 1994 - 01 - 08 (Soyuz TM - 18) </Td> <Td> 1995 - 03 - 22 (Soyuz TM - 20) </Td> <Td> Mir </Td> </Tr> <Tr> <Td> </Td> <Td> 379.6 days </Td> <Td> Sergei Avdeyev </Td> <Td> Russia </Td> <Td> 1998 - 08 - 13 (Soyuz TM - 28) </Td> <Td> 1999 - 08 - 28 (Soyuz TM - 29) </Td> <Td> Mir </Td> </Tr> <Tr> <Td> </Td> <Td> 365.0 days </Td> <Td> Vladimir Titov Musa Manarov </Td> <Td> Soviet Union </Td> <Td> 1987 - 12 - 21 (Soyuz TM - 4) </Td> <Td> 1988 - 12 - 21 (Soyuz TM - 6) </Td> <Td> Mir </Td> </Tr> <Tr> <Td> </Td> <Td> 340.4 days </Td> <Td> Mikhail Kornienko Scott Kelly </Td> <Td> Russia United States </Td> <Td> 2015 - 03 - 27 (Soyuz TMA - 16M) </Td> <Td> 2016 - 03 - 01 (Soyuz TMA - 18M) </Td> <Td> International Space Station ISS year long mission </Td> </Tr> <Tr> <Td> 5 </Td> <Td> 326.5 days </Td> <Td> Yury Romanenko </Td> <Td> Soviet Union </Td> <Td> 1987 - 02 - 05 (Soyuz TM - 2) </Td> <Td> 1987 - 12 - 29 (Soyuz TM - 3) </Td> <Td> Mir </Td> </Tr> <Tr> <Td> 6 </Td> <Td> 311.8 days </Td> <Td> Sergei Krikalev </Td> <Td> Soviet Union / Russia </Td> <Td> 1991 - 05 - 18 (Soyuz TM - 12) </Td> <Td> 1992 - 03 - 25 (Soyuz TM - 13) </Td> <Td> Mir </Td> </Tr> <Tr> <Td> 7 </Td> <Td> 289.2 days </Td> <Td> Peggy Whitson </Td> <Td> United States </Td> <Td> 2016 - 11 - 17 (Soyuz MS - 03) </Td> <Td> 2017 - 09 - 03 (Soyuz MS - 04) </Td> <Td> International Space Station </Td> </Tr> <Tr> <Td> 8 </Td> <Td> 240.9 days </Td> <Td> Valeri Polyakov </Td> <Td> Soviet Union </Td> <Td> 1988 - 08 - 29 (Soyuz TM - 6) </Td> <Td> 1989 - 04 - 7 (Soyuz TM - 7) </Td> <Td> Mir </Td> </Tr> <Tr> <Td> 9 </Td> <Td> 237.0 days </Td> <Td> Leonid Kizim Vladimir Solovyov Oleg Atkov </Td> <Td> Soviet Union </Td> <Td> 1984 - 02 - 08 (Soyuz T - 10) </Td> <Td> 1984 - 10 - 02 (Soyuz T - 11) </Td> <Td> Salyut 7 </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 215.4 days </Td> <Td> Mikhail Tyurin Michael López - Alegría </Td> <Td> Russia United States </Td> <Td> 2006 - 09 - 18 (Soyuz TMA - 9) </Td> <Td> 2007 - 04 - 21 (Soyuz TMA - 9) </Td> <Td> International Space Station </Td> </Tr> </Table>

Who has spent the longest time in space