China launches Shiyan-21 satellite to develop space communications

China launches Shiyan-21 satellite to develop space communications

22.11.2025
7 mins read
China successfully launched the Shiyan-21 satellite using a Long March-3B rocket from the Xichang Satellite Launch Center. This marks a new step in advancing communications, data transmission, and satellite broadcasting technologies.

In a new move that reinforces its growing ambitions in the space field, China announced the successful launch of a new experimental satellite dedicated to communications technology, confirming that Beijing continues to develop its space infrastructure at an accelerated pace.

Launch and mission details

China launched the Shiyan-21 satellite from the Xichang Satellite Launch Center in Sichuan Province, southwest China. The launch took place last Friday, with the satellite being carried aboard a Long March-3B carrier rocket.

According to the official Chinese news agency Xinhua, the launch proceeded according to the set timetable, with the satellite separating from the carrier rocket and successfully entering its predetermined orbit, prompting the control center to declare the mission a complete success.

The objectives and technical capabilities of the “Shiyan-21” satellite

The launch of Shiyan-21 is part of the Shiyan series of satellites (meaning "experiment" in Chinese), a series primarily dedicated to testing new technologies. This satellite will be used mainly in several vital areas, including:

  • Providing advanced satellite communications services.
  • Enhancing radio and television broadcasting capabilities.
  • Improving data transmission efficiency.
  • Conduct technical tests and verifications of new space technologies before adopting them in broader missions.

The Long March series: The backbone of China's space program

The Long March-3B carrier rocket is a key component of the renowned Long March family of rockets, which forms the backbone of China's space program. This version is distinguished by its high capacity for carrying satellites into geostationary orbits, making it the preferred choice for communications and navigation missions.

This mission marked the 609th flight of the Long March carrier rocket series, a number that reflects the high intensity of Chinese launches and the great reliability that Chinese rocket technology has achieved in recent years.

Strategic context and development of the Chinese space program

This launch cannot be viewed as an isolated event; rather, it is part of a comprehensive national strategy through which China aims to solidify its position as a space superpower. In addition to communications satellites, China has successfully launched its Tiangong space station and completed its BeiDou global navigation system, a competitor to the American GPS system.

By intensifying the launch of communications satellites and testing new technologies such as those in “Shiyan-21”, Beijing seeks to achieve complete technological independence, ensure a strong communications infrastructure that supports its economic and military sectors, as well as enhance its technological influence on the international stage.

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