Payload consists of two satellites for Europe's Galileo navigation system.
Launch is delayed due to the tracking station readiness, according to Roscosmos.
The 2.1b version adds an upgraded engine (RD-0124) with improved performance to the second stage. First launch took place from Plesetsk Cosmodrome Site 43 on 26 July 2008 with a classified military payload. The 2.1b/ST version is sometimes called Soyuz ST-B.
Progress Rocket Space Centre, formerly known as TsSKB-Progress, is a space science and aerospace research company which is known for manufacturing launch vehicles and satellites. Most notably, Progress Rocket Space Centre is the manufacturer of Soyuz launch vehicles.INFO WIKI
Arianespace successfully launched another two satellites for Europe’s Galileo satellite navigation system Dec. 4, growing the constellation to 28 in orbit.
Deployment of Europe’s independent Galileo navigation network resumed Saturday night with an on-target launch of two satellites aboard a Soyuz rocket, the final Arianespace mission from French Guiana before the historic liftoff of the Jame…