Compared to the previous versions of the Soyuz, the first-stage boosters and two core stages are uprated engines with improved injection system.
Russia is mulling to place nearly 40 satellites in orbit from over a dozen different countries using the Soyuz-2 carrier rocket in March, an area industry source told Sputnik. In November, it had been revealed that a Soyuz-2.1a carrier rocket with Fregat booster was getting to explode with South Korea n CAS500-1 spacecraft from the Bikanour space platform in March this year.
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