Mission type | Long-duration expedition |
---|---|
Mission duration | 340d 8h 43m |
Orbits completed | 5,356 [1] |
Expedition | |
Space station | International Space Station |
Began | March 27, 2015, 19:42 UTC |
Ended | March 2, 2016, 04:25 UTC |
Arrived aboard | Soyuz TMA-16M |
Departed aboard | Soyuz TMA-18M |
Crew | |
Crew size | 2 |
Members | |
EVAs | 4 |
EVA duration | 23h54m |
Scott Kelly and Mikhail Kornienko |
The ISS year-long mission , also called the One-Year Mission, was an 11-month-long scientific research project aboard the International Space Station, which studied the health effects of long-term spaceflight. [2]
The NASA Twins Study was conducted. Astronaut Scott Kelly is selected for the mission with his identical twin, Mark Kelly, on earth as control group. Scott spent 340 days in space for the experiment. The result demonstrated several long-lasting changes, including those related to alterations in DNA and cognition. [3] [4]
Astronaut Scott Kelly and cosmonaut Mikhail Kornienko spent 340 days in space with scientists performing medical experiments. Kelly and Kornienko launched on 27 March 2015 on Soyuz TMA-16M, along with Gennady Padalka. [5] [6] [7] [8] The mission encompassed Expeditions 43, 44, 45, and 46. [9] The pair safely landed in Kazakhstan on 2 March 2016, returning aboard Soyuz TMA-18M with Sergey Volkov. [10] The mission supported the NASA Twins study, which helps shed light on the health effects of long-duration spaceflight. [11]
The goal aboard the orbiting laboratory was to understand better how the human body reacts and adapts to the harsh environment of space. [9] Data from the mission was used to improve assessments of crew performance and health. They worked to develop and validate better countermeasures against the risks associated with future missions around the Moon, asteroids and ultimately Mars. [12]
In November 2012, NASA, the Russian Federal Space Agency (Roscosmos), and their international partners selected two veteran spacefarers for a one-year mission aboard the ISS in 2015. Astronaut Scott Kelly was selected as the identical twin of Mark Kelly. The mission included collecting scientific data important to future human exploration of the Solar System. Kelly and Korniyenko already had an indirect connection: Kelly was a backup crew for the station's Expedition 23/24, where Korniyenko served as a flight engineer. [13]
Identical twins Mark Kelly and Scott Kelly were studied for changes in the health of a body in space compared to a body on earth. A variety of mechanisms in the human body were analyzed, notably telomere length, body mass, eye and bone deformation, and immune response. Ten research teams are assembled to conduct an integrated research on the change on physiological, molecular and cognitive level after exposing to long-duration spaceflight.
The study also required the astronauts to keep a journal, and investigated the psychological effects of living in a confined space for an extended length of time. Kornienko said of his experiences on Expedition 23/24: "The thing you miss there most of all is the Earth itself, I missed smells. I missed trees, I even dreamt of them. I even hallucinated. I thought I smelled a real fire and something being barbecued on it! I ended up putting pictures of trees on the walls to cheer up. You do miss the Earth there." [14] Scott stated that he missed feeling changes in the weather while on the ISS. [15]
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On 12 April 2019, NASA reported medical results, from the NASA Twins study, which demonstrated several surprising changes, including those related to alterations in DNA and cognition, when one twin was compared with the other. [3] [4]
The study found:"significant changes in multiple data types were observed in association with the spaceflight period; the majority of these eventually returned to a preflight state within the time period of the study. These included changes in telomere length, gene regulation measured in both epigenetic and transcriptional data, gut microbiome composition, body weight, carotid artery dimensions, subfoveal choroidal thickness and peripapillary total retinal thickness, and serum metabolites. In addition, some factors were significantly affected by the stress of returning to Earth, including inflammation cytokines and immune response gene networks, as well as cognitive performance. For a few measures, persistent changes were observed even after 6 months on Earth, including some genes’ expression levels, increased DNA damage from chromosomal inversions, increased numbers of short telomeres, and attenuated cognitive function." [16]
During spaceflight, the length of telomeres increased by 14.5%. During spaceflight, the increase is observed from flight day 14 to flight day 334. The effect is rapidly reversed after returning earth and ultimately fall back to near preflight level after 6 months (190 days). [4] The other effects of spaceflight, such as reduced body mass and increased serum folate level, are associated with telomeres elongation .
Telomere length is associated with aging and lifespan. Shorter telomeres are related to early deaths, vice versa. [17] However, the exact effect of spaceflight to lifespan is currently not known.
The study found no significant changes in T cell production after the first vaccination of the study.
The International Space Station developed exercise equipment, including treadmills and resistance devices to limit muscle atrophy in a low gravity environment. Weightlessness causes body fluids in astronauts to accumulate in the upper half of the body, leading to facial edema and unwelcome side effects. One problem may be the low gravity affecting the body in unforeseen ways and it can be hard to detect the cause and effect of gravity on the body. Space seems to cause trouble for a number of body parts including bone, sometimes the eyes, and a classic problem is space sickness.[ citation needed ]
Vladimir Titov and Musa Manarov spent 365 days in space on Mir from December 1987 to December 1988. Valeri Polyakov spent 438 days on Mir in 1994-1995 and Sergey Avdeyev spent 380 days on Mir in 1998-1999. [18] [19]
Prior to the year-long mission, the longest mission on the ISS was 215 days by Mikhail Tyurin and Michael López-Alegría. Christina Hammock Koch holds the record for the longest single spaceflight by a woman at 328 days. [20] In March 2022, NASA's Mark T. Vande Hei and the Russian Pyotr Dubrov landed, following 355 days in space as part of ISS Expeditions 64/65/66. [21]
Koichi Wakata is a Japanese engineer and an astronaut working for Axiom Space. He retired from JAXA in 2024. Wakata is a veteran of four NASA Space Shuttle missions, a Russian Soyuz mission, and a long-duration stay on the International Space Station. During a nearly two-decade career in spaceflight, he has logged more than five hundred days in space. During Expedition 39, he became the first Japanese commander of the International Space Station. Wakata flew on the Soyuz TMA-11M/Expedition 38/Expedition 39 long duration spaceflight from 7 November 2013 to 13 May 2014. During this spaceflight he was accompanied by Kirobo, the first humanoid robot astronaut.
Scott Joseph Kelly is an American engineer, retired astronaut, and naval aviator. A veteran of four space flights, Kelly commanded the International Space Station (ISS) on Expeditions 26, 44, 45, and 46.
Fyodor Nikolayevich Yurchikhin is a Russian cosmonaut of Pontic Greek descent, engineer and RSC Energia test-pilot who has flown on five spaceflights. His first spaceflight was a 10-day Space Shuttle mission STS-112. His second was a long-duration stay aboard the International Space Station (ISS) as a flight engineer for Expedition 15; for this mission he was launched in the Soyuz TMA-10 spacecraft. He has undertaken two further long-duration stays aboard the ISS, as a crew member of Expedition 24 / 25. For this mission he was launched with the spacecraft Soyuz TMA-19, and he landed in November 2010, also with the Soyuz TMA-19 spacecraft. He served as Soyuz commander for his fourth mission aboard Soyuz TMA-09M, as flight engineer for Expedition 36 and ISS commander for Expedition 37. In April 2017, Yurchikhin launched on Soyuz MS-04 for the fifth spaceflight of his career, a six-month mission to the ISS as part of Expedition 51 and 52, for which he was the commander.
Soichi Noguchi is a Japanese aeronautical engineer and former JAXA astronaut. His first spaceflight was as a mission specialist aboard STS-114 on 26 July 2005 for NASA's first "return to flight" Space Shuttle mission after the Columbia disaster. He was also in space as part of the Soyuz TMA-17 crew and Expedition 22 to the International Space Station (ISS), returning to Earth on 2 June 2010. He is the sixth Japanese astronaut to fly in space, the fifth to fly on the Space Shuttle, and the first to fly on Crew Dragon.
Mikhail Borisovich Kornienko is a Russian cosmonaut who has undertaken multiple missions to the International Space Station (ISS).
Michael Reed Barratt is an American physician and a NASA astronaut. Board certified in internal and aerospace medicine, he served as a flight surgeon for NASA before his selection as an astronaut and has played a role in developing NASA's space medicine programs for both the Shuttle–Mir program and International Space Station. His first spaceflight was a long-duration mission to the International Space Station as a flight engineer on the Expedition 19 and 20 crew. In March 2011, Barratt completed his second spaceflight as a crew member of STS-133. Barratt made a second long-duration mission to the International Space Station as a flight engineer on the Expedition 70, 71, and 72 crew and also served as the pilot on the SpaceX Crew-8 mission.
Sergey Aleksandrovich Volkov is a retired Russian cosmonaut and engineer. He was a member of three missions to the International Space Station, spending more than a year in total in space. During his missions he did four spacewalks lasting more than 23 hours in total. Volkov retired from the Cosmonaut group in February 2017.
Andrey Ivanovich Borisenko is a Russian cosmonaut. He was selected as a cosmonaut in May 2003, and is a veteran of two long duration missions to the International Space Station.
Expedition 24 was the 24th long-duration mission to the International Space Station (ISS). Expedition 24 initially had two planned spacewalks, one Russian and one American Extra-vehicular Activity (EVA). The U.S. EVA was re-planned and a second U.S. EVA was added.
Kimiya Yui is a Japanese astronaut from the Japan Aerospace Exploration Agency (JAXA). He was selected for the agency in 2009.
Kjell Norwood Lindgren is an American astronaut who was selected in June 2009 as a member of the NASA Astronaut Group 20. He launched to the International Space Station (ISS) as part of Expedition 44/45 on July 22, 2015.
Mark Thomas Vande Hei is a retired United States Army officer and current NASA astronaut who has served as a flight engineer for Expedition 53, 54, 64, 65, and 66 on the International Space Station.
Aleksandr Aleksandrovich Skvortsov is a Russian cosmonaut. He is a veteran of three spaceflights, which were long-duration missions aboard the International Space Station. His first spaceflight took place from April to September 2010, and was launched with the spacecraft Soyuz TMA-18. He arrived at the station part way through Expedition 23, of which Oleg Kotov was the Commander. When Expedition 24 began in June, Skvortsov became Commander.
Soyuz TMA-16M was a 2015 flight to the International Space Station. It transported three members of the Expedition 43 crew to the station. TMA-16M was the 125th flight of a Soyuz spacecraft, the first having launched in 1967.
Expedition 46 was the 46th expedition to the International Space Station.
A Beautiful Planet is an IMAX Entertainment documentary produced in collaboration with NASA and filmed aboard the International Space Station by astronaut crews. Narrated by Jennifer Lawrence, it was produced and directed by Toni Myers.