 Soyuz MS-25 illuminated by an aurora | |
| Names | ISS 71S |
|---|---|
| Mission type | ISS crew transport |
| Operator | Roscosmos |
| COSPAR ID | 2024-055A |
| SATCATno. | 59294 |
| Mission duration | 183 days, 23 hours, 22 minutes and 54 seconds |
| Distance travelled | 126,000,000 km (78,000,000 mi)[1] |
| Orbits completed | 2,944[1] |
| Spacecraft properties | |
| Spacecraft | Soyuz MS-25 No. 756[2] |
| Spacecraft type | Soyuz MS |
| Manufacturer | Energia |
| Launch mass | 7,152 kg (15,767 lb)[2] |
| Crew | |
| Crew size | 3 |
| Members | Tracy Caldwell Dyson |
| Launching | |
| Landing | |
| Callsign | Kazbek |
| Start of mission | |
| Launch date | 23 March 2024, 12:36:10 (2024-03-23UTC12:36:10Z) UTC[3] |
| Rocket | Soyuz-2.1a No. 15000-066[2] |
| Launch site | Baikonur,Site 31/6 |
| Contractor | RKTs Progress |
| End of mission | |
| Landing date | 23 September 2024, 11:59:04 (2024-09-23UTC11:59:05Z) UTC[4] |
| Landing site | Kazakh Steppe, Kazakhstan (47°21′00″N69°38′00″E / 47.35000°N 69.63333°E /47.35000; 69.63333)[4] |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Low Earth orbit |
| Inclination | 51.66° |
| Docking withISS | |
| Docking port | Prichalnadir |
| Docking date | 25 March 2024, 15:02:51 UTC[2] |
| Undocking date | 23 September 2024, 08:36:30 UTC[4] |
| Time docked | 181 days, 17 hours, 33 minutes and 39 seconds |
  Mission patches: launch (left) and landing (right) .jpg)  Top: launching crew, from left:Dyson,Novitsky, andVasileuskaya Bottom: landing crew, from left:Kononenko,Chub, and Dyson | |
Soyuz MS-25, Russian production No. 756 and identified byNASA asSoyuz 71S, was a Russian crewedSoyuz spaceflight fromBaikonur Cosmodrome to theInternational Space Station.[5][6]
MS-25 saw was the first launch of two women,Tracy Caldwell-Dyson from theUnited States andMaryna Vasileuskaya fromBelarus,[7] aboard aSoyuz spacecraft. MS-25 also saw the launch of two people from Belarus, as the mission commander,Oleg Novitsky was born inChervyen, when it was part of theByelorussian Soviet Socialist Republic.
| Position | Launching crew member | Landing crew member |
|---|---|---|
| Commander | Oleg Novitsky,Roscosmos 21st Visiting Expedition Fourth spaceflight | Oleg Kononenko,Roscosmos Expedition 69/70/71 Fifth spaceflight |
| Spaceflight participant/Flight engineer | Maryna Vasileuskaya,Belarus Space Agency 21st Visiting Expedition First spaceflight | Nikolai Chub, Roscosmos Expedition 69/70/71 First spaceflight |
| Flight engineer | Tracy Caldwell-Dyson,NASA Expedition 70/71 Third spaceflight | |
| Position | Crew | |
|---|---|---|
| Commander | Ivan Vagner, Roscosmos | |
| Spaceflight participant | Anastasia Lenkova, Belarus Space Agency | |
| Flight engineer | Donald Pettit, NASA | |
.jpg)
It was originally scheduled for launch on 21 March 2024, but due to a voltage drop in one of the power generators, the launch was aborted.[8] The second launch attempt on 23 March 2024 was successful.
Caldwell-Dyson spent approximately six months aboard the International Space Station. Novitsky and Vasileuskaya of Belarus spent approximately 13 days aboard the orbital complex as a part of21st ISS visiting expedition before returning aboard Soyuz MS-24.[9]
At the end of Expedition 71, Caldwell-Dyson returned to Earth on Soyuz MS-25 with Roscosmos cosmonautsOleg Kononenko andNikolai Chub on 23 September 2024. They arrived withNASA astronautLoral O'Hara onSoyuz MS-24 on 15 September 2023. O'Hara returned to Earth on MS-24 with Novitsky and Vasileuskaya.[9][10] Kononenko and Chub remained aboard the orbital laboratory for a year. As the mission lasted 374 days, Kononenko spent a total of 1,111 days in space by the time he returned to Earth. He broke the world record of 878 days in space held byGennady Padalka on February 4, 2024 at 07:30:08 UTC. He later became the first person to stay 900, 1,000, and 1,100 days in space on 25 February 2024, 4 June 2024, and 12 September 2024 respectively.[11]
This article incorporatespublic domain material fromNASA Astronaut Tracy C. Dyson Receives Third Space Station Assignment.National Aeronautics and Space Administration.
People currently inlow Earth orbit | |||||
|---|---|---|---|---|---|
| International Space Station (Expedition 73) |
| ||||
| Tiangong (Expedition 9) |
| ||||
| Main topics |  | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Past missions (by spacecraft type) |
| ||||||||||||||||||||||||||
| Current missions | |||||||||||||||||||||||||||
| Future missions | |||||||||||||||||||||||||||
Uncrewed missions are designated asKosmos instead ofSoyuz; exceptions are noted "(uncrewed)". The † sign designates failed missions.Italics designates cancelled missions. | |||||||||||||||||||||||||||
See also:ISS expeditions,Uncrewed ISS flights | ||
| 1998–2004 |  | |
| 2005–2009 | ||
| 2010–2014 | ||
| 2015–2019 | ||
| 2020–2024 |
| |
| Since 2025 | ||
| Future | ||
| Individuals | ||
| Vehicles | ||
| ||
