China's Space Computing Push: Why Is 'Space Computing' Superior to 'Ground Computing'?
What Is Space Computing?
Space computing refers to deploying computational capability in space through satellite constellations to achieve global seamless coverage. Its primary advantages over terrestrial data centers are real-time responsiveness and universal reach.
By deploying radiation-hardened chips, servers, and storage devices directly on satellites in orbit, each satellite gains an "AI super brain." Data is collected, analyzed, and decisions are made on-orbit, with only the most valuable results transmitted back to Earth — enabling "same-day computing in space" and "ground-space coordination."
Why Move Computing to Space?
As the artificial intelligence industry experiences explosive growth and demand for computing power intensifies, terrestrial data centers face mounting challenges in energy consumption, land use, and cooling. Forecasts predict China's data center electricity consumption will grow at an average annual rate of approximately 20% from 2024 to 2030 — far exceeding the overall growth rate of social electricity consumption.
Space, by contrast, is a "computing-friendly" environment. Abundant solar energy combined with the natural vacuum and ultra-low temperatures turn space into a "green data center." Once a space computing satellite constellation is operational, it will no longer be constrained by terrestrial fiber optics and base stations, achieving near-100% global seamless coverage.
Academician Wang Jian, Vice President of the Chinese Academy of Engineering and Director of Zhejiang Lab, stated that the goal is not simply to relocate ground data centers into space, but to enable the deep utilization of space-born data that has previously been impossible to fully leverage.
Wang explained that developing space computing requires first achieving global coverage through satellite constellations, second enabling inter-satellite connectivity, and third building a sufficient scale of satellites in orbit. "Through precise orbital design, approximately 1,000 satellites can essentially ensure that any location on Earth has a satellite passing overhead for observation every three minutes, at which point the application value of satellites will increase dramatically. When scaled up, this can form an infrastructure comparable to terrestrial data centers," Wang said.
Where Will Space Computing Be Applied?
According to related forecasts, the space economy is expected to reach $1.8 trillion by 2035.
Xie Lina, Deputy Director of the Data Center Department at the Cloud and Big Data Research Institute of CAICT, explained that computing satellites can form networks through laser communication, achieving global seamless coverage and processing data directly on orbit — compressing data latency in disaster early warning and resource monitoring scenarios from several hours to seconds, something ground computing cannot achieve.
Emergency and Disaster Monitoring: Rapid identification of fire spots, floods, and earthquake damage characteristics, winning critical windows for disaster prevention and reduction.
Smart Agriculture: Real-time monitoring of crop growth, pest identification, and drought/flood risk assessment.
Ocean and Polar Monitoring: In vast ocean areas and polar ice sheets, space computing can independently complete tasks such as illegal fishing identification and ice layer analysis.
How Far Has China's Space Computing Come?
In 2025, China successfully launched the first batch of 12 satellites in the space computing satellite constellation from the Jiuquan Satellite Launch Center using a Long March-2D rocket. The combined computing power of this single orbit is equivalent to a small-scale computing center. This launch marked the successful orbital insertion of the world's first space computing satellite constellation.
Xie Lina stated that China is currently the first country to achieve on-orbit constellation networking for space computing, leading the world in engineering practice and commercial deployment speed, placing it in the global "first tier" in the space computing race.
However, this is only the first step. By 2035, China plans to build a global space infrastructure comprising 2,800 computing satellites — a supercomputing center to be shared with global partners.