How NASA is rearranging the International Space Station to welcome new arrivals
In short: The International Space Station is undergoing a major structural reconfiguration. By moving an 11-ton module, mission controllers in Houston are clearing vital docking ports to prepare the orbital outpost for the next generation of U.S. commercial crew vehicles.
On May 27, robotic flight controllers at Mission Control in Houston executed a delicate maneuver using the Canadarm2 robotic arm. An 11-ton piece, the Permanent Multipurpose Module, was moved from Unity's Earth-facing port to Tranquility's forward port. This strategic shift was designed to open the Unity module's Earth-facing port, creating a new berthing location for incoming U.S. commercial cargo vehicles. This orbital relocation was a precise operation managed by the agency's robotics officer. The maneuver ensures the station remains ready for the evolving needs of international partners.
While the station's configuration is shifting, the complexity of its current traffic is unprecedented. For the first time in the station's history, all eight docking ports were fully occupied. A varied group occupied the tight orbit: two Progress cargo ships, two Roscosmos Soyuz crew vessels, JAXA’s HTV-X1, Northrop Grumman’s Cygnus XL, and two SpaceX Dragons. The recent arrival of the Soyuz MS-28 spacecraft on November 27, 2025, brought three new residents to the station. This influx of personnel coincided with a period of intense scientific activity for the Expedition 73 crew.
The reconfiguration is part of a broader effort to integrate future U.S. Private crew ships are anticipated to dock with updated International Docking Adapters being fitted onto Harmony module hardware. This transition occurs amidst ongoing high-stakes operations, such as the management of the Cygnus XL, which is scheduled to depart no earlier than March 2026 to dispose of up to 11,000 pounds of waste by burning up in Earth's atmosphere. Until July 2026, the station's present crew—comprising Roscosmos cosmonauts Sergei Mikaev and Sergey Kud-Sverchkov alongside NASA's Chris Williams—is set to stay in orbit. Their mission involves studying how microgravity impacts the microcirculatory systems in human extremities.
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Sources
- Summary by Intellect · source: International Space Station Module Moved to New Location To Prep For U.S. Commercial Vehicle Traffic
- Also: Space Station First: All Docking Ports Fully Occupied, 8 Spacecraft on Orbit - NASA
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