Nasa.gov: ISS Crew Trains Robotics and Runs Health Research as Cygnus XL Targets April 8 Launch
nasa. gov updates show the Expedition 74 crew aboard the International Space Station spent Wednesday focused on robotics training and human research, while preparing for the arrival of Northrop Grumman’s Cygnus XL cargo spacecraft. The work unfolded on orbit as Cygnus XL is targeted to launch to the station no earlier than Wednesday, April 8 at 8: 49 a. m. ET, and as Artemis II launch preparations continue. The crew also added spacesuit work, cargo operations, and Earth observations to a shift aimed at keeping station operations tight ahead of the next wave of activity.
Robotics drills center on Cygnus XL capture practice
NASA flight engineers Chris Williams and Jack Hathaway trained together in the cupola to practice capturing Cygnus XL using the Canadarm2 robotic arm. The session began with a step-by-step review of the robotics workstation’s display and control panel, then moved into simulated operations designed to rehearse capture under a variety of approach scenarios as the spacecraft nears the orbital outpost.
NASA flight engineers Jessica Meir and ESA (European Space Agency) astronaut Sophie Adenot also trained to use Canadarm2 to refresh their skills. Mission rules require the crew to practice simulated spacecraft capture scenarios every 60 days to maintain familiarity with the robotics workstation.
Health monitoring and station systems work stack up during the shift
Williams carried out a blood draw and took a cognition test as part of the CIPHER suite of 14 human research investigations, work intended to help doctors understand how physical and mental health adapt to microgravity. Hathaway used a sound meter to record noise levels in station living and working areas to help ensure a safe, comfortable hearing environment, then checked the operation of the Exploration Potable Water Dispenser. NASA describes that technology demonstration as supporting water sanitization methods, reducing microbial growth, and dispensing hot water into crew food and drink bags.
Meir reviewed a new technology demonstration that removes humidity from a spacecraft and tested spare wireless hardware. Adenot worked in the Quest airlock, checking out a spacesuit by replacing its arm and leg components and then testing the suit’s power cable connections.
The four astronauts also gathered in the Columbus laboratory module for a short session of artery scans using the Ultrasound 3 device. Doctors on the ground monitored the scans in real time, reading the interpretation of acoustic echoes to stay current on the astronauts’ health conditions.
Russian segment focuses on cargo flow, Earth imagery, and disposal prep
Roscosmos flight engineers Sergei Mikaev and Andrey Fedyaev continued unpacking cargo delivered by the Progress 94 resupply ship after it docked to the Poisk module on March 24. Mikaev also closed out an automated Earth photography session that captured imagery of mountains and volcanos across North America and Asia during the crew’s sleep shift. Fedyaev wore cuffs on his arm, wrist, and finger to measure blood pressure for an ongoing cardiovascular study.
Station commander Sergey Kud-Sverchkov gathered obsolete cargo for disposal and packed it inside the Progress 93 cargo craft that is due to depart the station later this month. He also documented the location of personal items and lab hardware, and inspected video recording equipment throughout the station’s Roscosmos segment.
Cygnus XL launch time and Artemis II window add urgency to planning
Cygnus XL is targeted to launch no earlier than Wednesday, April 8 at 8: 49 a. m. ET, delivering advanced microgravity research gear to study quantum computing technology, test stem cell therapies, and promote astronaut health, among other work. In parallel, the seven-member Expedition 74 crew is expected to be asleep when the Artemis II launch window opens at 6: 24 p. m. ET today, with Artemis II described as slated to launch.
In a separate station-day snapshot dated March 27, 2026, four Expedition 74 members—Williams, Meir, Hathaway, and Adenot—had an off-duty day to exercise and unwind, while other crew in the station’s Russian segment handled maintenance and cargo operations. That rhythm shift underscored how quickly the schedule can swing back to high-tempo operations as new deliveries and upgrades approach.
What’s next: capture readiness, cargo science, and tight timelines
In the immediate days ahead, the station’s focus remains on maintaining capture readiness for Cygnus XL and keeping human research and station systems work on track. Crew time will continue to be balanced between hands-on training, health monitoring, and cargo management as launch timelines firm up. For readers tracking the pace of operations, nasa. gov signals a station schedule built around rehearsals first—so when the next vehicle arrives, the crew is ready to execute without hesitation.
