Astronaut breaks duration record NASA astronaut Frank Rubio has inadvertently broken the U.S. record for the longest ever space mission, after a mishap on the International Space Station left him stranded in space International Space Station (ISS) Frank Rubio TOP 10 LONGEST HUMAN SPACEFLIGHTS Launch date V. Polyakov RUS 1994 437.7 days S. Avdeyev RUS 1998 379.6 S. Prokopyev RUS D. Petelin RUS 2022 371 F. Rubio U.S. (assuming Sep 27 return) V. Titov USSR M. Manarov USSR 1987 365.9 P. Dubrov RUS M. Vande Hei U.S. 2021 355.2 M. Kornienko RUS S. Kelly U.S. 2015 340.4 C. Koch* U.S. 2019 328.6 Y. Romanenko USSR 1987 326.5 S. Krikalev USSR 1991 311.8 P. Whitson* U.S. 2016 289.2 Sep 21, 2022: Rubio and cosmonauts Sergey Prokopyev and Dmitri Petelin launched on six-month mission to ISS aboard Soyuz MS-22 Dec: Soyuz develops leak while attached to ISS, rendering it unsafe to fly crew home Feb 24, 2023: Unmanned Soyuz MS-23 sent to ISS to bring astronauts home Sep 27: Rubio and Russian cosmonauts set to return to Earth *Female Sources: Gizmodo, collectSPACE Pictures: NASA © GRAPHIC NEWS