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| The International Space Station |
The International Space Station is entering a busy period of cargo operations, with a SpaceX Dragon now back on Earth and two more resupply ships preparing to depart in the coming weeks.
A SpaceX Dragon spacecraft completed its six-month mission at the International Space Station on Thursday, parachuting to a splashdown in the Pacific Ocean off the California coast at 11:44 p.m. PST. The capsule carried several thousand pounds of scientific experiments and lab hardware for retrieval and analysis by NASA and SpaceX support personnel.
Dragon had undocked from the Harmony module's forward port at 12:05 p.m. Thursday, ending a mission that began with its arrival at the station on August 25, 2025. The successful return marks the beginning of an active period for the Expedition 74 crew, who now turn their attention to March's cargo departure schedule.
Japan's HTV-X1 Begins Final Mission Phase
The next cargo craft scheduled to leave is JAXA's HTV-X1, Japan's next-generation resupply spacecraft. Currently attached to Harmony's Earth-facing port, the HTV-X1 completed its primary resupply mission months ago and is now being packed with trash, disposable equipment, and obsolete hardware by NASA astronauts Chris Williams, Jessica Meir, Jack Hathaway, and ESA astronaut Sophie Adenot.
The departure process involves two distinct steps. First, the station's robotic arm, Canadarm2, will uninstall HTV-X1 from its berthing port in early March. Japanese controllers will then conduct sensor demonstration testing while the spacecraft remains grappled by the robotic arm, testing onboard sensors in a controlled environment before release.
Unlike Dragon's return to Earth, HTV-X1 will not survive its journey home. The spacecraft is scheduled for release into independent orbit approximately one day after uninstallation, where it will spend several additional weeks conducting scientific experiments before a destructive but safe reentry over the South Pacific Ocean. During this extended orbital phase, HTV-X1 will test new antenna and solar cell technologies and deploy CubeSats for independent research missions.
HTV-X1 launched from Tanegashima Space Center in southern Japan on October 25, 2025, and was captured by Canadarm2 for installation to Harmony on October 29.
Continuous Logistics Chain Continues with Cygnus
The departure schedule doesn't end with the Japanese spacecraft. Just days after HTV-X1's release, Canadarm2 will remove Northrop Grumman's Cygnus XL cargo craft from the Unity module's Earth-facing port. This trash-filled spacecraft, which arrived at the station on September 18 following its September 14 launch from Florida, will also be released for a destructive atmospheric reentry above the South Pacific.
These cargo movements represent the continuous logistics cycle that keeps the International Space Station operating. As the Dragon returns to Earth with completed experiments and the HTV-X1 prepares for its final science mission, the station's logistics chain demonstrates the coordinated international effort required to maintain humanity's orbiting laboratory.
Research Continues Across Station Segments
While cargo operations dominate the schedule, scientific research continues across both the American and Russian segments. NASA is preparing to roll out the seventh solar array to increase power generation, a task requiring a spacewalk that two astronauts are now preparing for. This power upgrade will support the station's expanding research capabilities through its planned operational lifetime.
In the Russian segment, cosmonauts have been conducting diverse research activities. Commander Sergey Kud-Sverchkov and Flight Engineer Sergei Mikaev began shifts monitoring cardiac activity with electrodes, while Kud-Sverchkov later pointed molecular beams at semiconductor crystals to observe crystal growth in microgravity. Flight Engineer Andrey Mikaev dismantled Earth observation hardware after an automated overnight photography session.
Meanwhile, cosmonaut Alexander Fedyaev participated in technology demonstrations using virtual reality goggles to test balance and orientation, responding to computer-controlled visual and audio stimuli. He also explored artificial intelligence-assisted tools for speech-to-text conversion, aiming to improve documentation for data and communications with ground controllers.
For complete details on station activities, follow the space station blog at NASA.gov , which provides regular updates on crew activities, research progress, and spacecraft operations aboard the International Space Station.
The coming weeks will see the orbiting laboratory transition through another logistics phase, with two spacecraft departing and new research opportunities emerging from the HTV-X1's extended science mission. As the Expedition 74 crew manages these operations, the station continues its role as a platform for scientific discovery and international cooperation in space.