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Roscosmos, Kazcosmos Delay Soyuz-5 First Launch on Technical Grounds

The program moves into an expanded test campaign to verify systems before participants set a new date.

Overview

  • Roscosmos says the rocket’s general assembly at Baikonur is complete and the Baiterek ground infrastructure is ready for flight tests.
  • Officials ordered additional checks of onboard systems and ground equipment to build reliability data and strengthen safety margins.
  • Specialists are running an expanded test program to confirm stable operation of all systems in both normal and abnormal modes at the launch facility.
  • The maiden liftoff will proceed from the Baiterek complex once required procedures are finished and partners agree on timing, with no plan to tie the date to holidays.
  • Soyuz-5 is a two-stage medium-class launcher built by Progress Rocket and Space Center for unmanned low-Earth orbit missions, with full operational service targeted for 2028.