At the Baikonur Cosmodrome, the general assembly of the Soyuz-2.1a rocket with the manned spacecraft has been completed after all stages of preparation for the flight. Roscosmos showed how the Soyuz MS-25 structure is assembled before being sent to the launch pad.
During assembly on the slipway, two of the four side boosters of the rocket are laid down first, followed by the central core. After their assembly, the two remaining side boosters are installed on top.
After assembling the first and second stage package, it is docked with the third stage, which is brought up on a docking and assembly trolley. Each of the blocks of all three stages of the Soyuz contains both fuel and oxidizer.
On March 18, the rocket will be transported from the assembly and testing complex to the launch pad. The launch is scheduled for March 21 at 16:21:19 Moscow time.
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