Expedition 73
| Mission type | Long-duration expedition |
|---|---|
| Operator | NASA / Roscosmos |
| Expedition | |
| Space station | International Space Station |
| Began | 19 April 2025 |
| Ended | 8 December 2025 |
| Arrived aboard | |
| Departed aboard | |
| Crew | |
| Crew size | 7–11 |
| Members | |
| EVAs | 1 |
| EVA duration | 5 hours, 44 minutes |
Expedition 73 mission patch Left to right, top row: Peskov, Kim, Ryzhikov, Zubritsky and Onishi. Bottom row: Ayers and McClain. | |
Expedition 73 is the 73rd long-duration expedition to the International Space Station (ISS). The expedition began with the departure of Soyuz MS-26 on 19 April 2025 with JAXA astronaut Takuya Onishi taking over the ISS command. It will continue the extensive scientific research conducted aboard the ISS, focusing on various fields, including biology, human physiology, physics, and materials science. The crew members will also maintain and upgrade the space station systems.