ISS year-long mission
| Mission type | Long-duration expedition |
|---|---|
| Mission duration | 340d 8h 43m |
| Orbits completed | 5,356 |
| 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.
As part of the mission, the NASA Twins Study was conducted. Astronaut Scott Kelly was selected for the mission with his identical twin, Mark Kelly, who stayed on Earth as a control. 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.