# Soyuz 2.1a | Progress MS-34 Mission Overview

Progress MS-34, designated flight 95P, is a robotic resupply mission to the International Space Station. The uncrewed Progress spacecraft carries essential cargo including supplies, equipment, and consumables for the ISS crew. These routine resupply missions are critical for maintaining continuous human operations aboard the orbiting laboratory, delivering food, water, scientific instruments, and spare parts necessary for station systems and experiments.

The Soyuz 2.1a launch vehicle lifted off successfully from Baikonur Cosmodrome in Kazakhstan on April 26, 2026. Operating under ROSCOSMOS authority, Russia's Federal Space Agency, this modernized variant of the reliable Soyuz rocket has become the workhorse for both crew and cargo transport to the ISS. Baikonur remains a primary launch site for ISS resupply missions, leveraging decades of operational experience.

Following a standard two-day orbital flight profile, Progress MS-34 autonomously docked to the Zvezda module of the ISS on April 28, 2026. The mission proceeded nominally from launch through orbital insertion and approach phases. Progress spacecraft typically remain docked for several months, allowing crew to unload cargo and transfer waste before undocking and deorbiting over remote ocean areas, completing the resupply cycle.