Dragon docks with station carrying solar arrays and research
The CRS-35 spacecraft reached the Harmony module at 10:27 a.m. Eastern with more than 6,300 pounds of cargo.
Docking completes the flight to station
A SpaceX Dragon cargo spacecraft docked autonomously with the International Space Station at 10:27 a.m. Eastern on Thursday, completing a two-day flight from Florida. The vehicle attached to the space-facing port of the station’s Harmony module.
Dragon delivered more than 6,300 pounds of food, supplies, experiments and equipment for the Expedition 75 crew. The mission, designated CRS-35, is SpaceX’s 35th commercial resupply flight to the station for NASA.
The spacecraft launched at 6:33 a.m. Eastern Tuesday on a Falcon 9 rocket from Cape Canaveral Space Force Station. Docking is a separate mission milestone from launch because Dragon must raise its orbit, approach through controlled checkpoints and connect safely with the occupied laboratory.
Final roll-out solar arrays arrive
The largest hardware delivery is the final pair of International Space Station Roll-Out Solar Arrays. Astronauts are expected to install them during spacewalks later this fall, completing an augmentation of the station’s older power system.
The compact arrays are designed to unfurl after installation and increase the electricity available for laboratories, life-support equipment, visiting vehicles and routine station operations. NASA says the power upgrade also supports preparations for the station’s eventual safe, controlled deorbit.
Arrival does not mean the arrays are ready to generate power. The crew must unload and stage the hardware, and installation and electrical connections must be completed during planned extravehicular work.Cargo vehicles are integrated into the station schedule alongside crew research, maintenance and other visiting spacecraft. Teams on the ground coordinate unloading priorities so time-sensitive science can be transferred promptly while large hardware remains secured until it can be handled safely.
Research begins after unloading
Other cargo includes equipment to manufacture artificial retinas in microgravity, three-dimensional heart-tissue models for drug testing, brain organoids for research on neurodegenerative disease and materials for studying how a new type of glass forms without Earth’s gravity-driven convection.
These are research investigations, not finished medical treatments. Microgravity can help scientists isolate biological and materials processes, but findings must be analyzed and validated before they can support clinical or commercial use.
NASA says Dragon is scheduled to remain at the station until mid-November. Unlike many cargo vehicles, it can return selected samples and hardware to Earth; the current plan calls for a splashdown off California with time-sensitive research and other cargo.
Researchers can use the return capability to compare samples before and after flight and to inspect equipment that operated in orbit. That round trip is one reason Dragon supports investigations requiring laboratory analysis that cannot be completed aboard the station.
Thursday’s update confirms the spacecraft is securely docked and the delivery phase is complete. The next visible work shifts to unloading, conducting the experiments and preparing the solar-array installation, with schedules subject to station operations and safety reviews.