Progress MS-34, (designated Progress 95 by NASA), automatically docked with the aft port of the Zvezda service module on the International Space Station (ISS) on Tuesday, (April 28), at about 00:01 UTC. This mission marked the second Russian cargo flight of 2026 and was critical for restoring supply chains after a launch pad accident in late 2025.
Progress MS-34 delivered about 2,500 kilograms of supplies to support Expedition 74. The cargo manifest included:
Pressurized Logistics (1,348 kg): 483 kg of food, 333 kg of hygiene items, 311 kg of repair gear, 146 kg of scientific equipment, and 75 kg of medical supplies.
Unpressurized Cargo: The most prominent item was the Orlan-MKS spacesuit No. 8, the eighth variant of this series, essential for future spacewalks from the Russian segment.
Unpressurized Logistics (1,170 kg): 700 kg of propellant, 420 kg of drinking water, and 50 kg of oxygen.
Scientific Experiments: Payloads included studies on Virtual reality effects on vision and spatial orientation, Neiroimmunitet (immune and nervous system reactions to stress), Biodegradatsiya (microorganism action on materials), and Separatsiya (water recycling improvements).
While docked, Progress MS-34 is responsible for performing orbital reboost burns to maintain the ISS altitude and adjust its orientation, a task previously handled by Progress MS-33, which is docked at the less optimal Poisk module.
The spacecraft is expected to remain attached to the station for roughly seven months before being loaded with waste for a destructive re-entry into Earth's atmosphere. Its arrival followed the undocking and deorbit of Progress MS-32 on April 20, 2026, which had cleared the Zvezda aft port for MS-34.
The spacecraft was launched atop a Soyuz-2.1a rocket from Baikonur Cosmodrome, Site 31/6, on April 25, 2026, at 2221 UTC. The launch occurred at the repaired pad, which had sustained significant damage during the Soyuz MS-28 launch on November 27, 2025.
Progress MS-34 was the second mission to use the repaired pad, following Progress MS-33, and was part of a compressed schedule to replenish the ISS after the interruption. The launch vehicle carried the ~7,280 kg spacecraft into a low-Earth orbit inclined at 51.67 degrees, with the cargo ship separating and beginning its autonomous rendezvous shortly after.
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Russian Soyuz rocket launched the Progress 95 cargo spacecraft on Saturday, (April 25), at 2221 UTC from the Baikonur Cosmodrome in Kazakhstan. The robotic freighter will deliver about 3 tons of essential supplies, including food, propellant, water, and scientific equipment, to the International Space Station (ISS) for the Expedition 74 crew.
Progress 95 is scheduled to autonomously dock with the aft port of the Zvezda module on Monday, April 27, at 0000 UTC.
This arrival followed the departure of Progress 93, which undocked on April 20 and burned up in Earth’s atmosphere over the Pacific Ocean to make room for the new cargo ship. Saturday's mission marked the second Russian cargo resupply flight of 2026, following the March 22 launch of Progress 94.
Progress 95 is expected to remain docked to the station for about seven months before departing to dispose of waste. It joins a fleet of four primary resupply vehicles, alongside Japan’s HTV-X, Northrop Grumman’s Cygnus, and SpaceX’s Dragon. All are expendable except Dragon, which makes splashes down in the ocean.
