A 12-fold increase in global data heralds a major infrastructure transformation.
The industrial implications of Musk and Bezos' "space-based AI infrastructure" are drawing attention.
A new infrastructure crisis brought about by the AI era
세계는 현재 인류 역사상 그 어느 때보다도 많은 데이터를 생산하고 있다. 인공지능 서비스, 스트리밍 플랫폼, 자율주행차, 전자상거래 물류 시스템, 위성 영상, 금융 시스템, 그리고 수십억 개의 IoT 기기가 만들어내는 정보량은 이미 사상 최대 수준이다. 특히 대규모 AI 모델은 학습 과정에서 방대한 양의 데이터가 필요할 뿐 아니라, 운영 단계에서도 엄청난 전력과 연산 자원을 요구한다. 산업통계 전문기관 스테티스타(Statista)는 글로벌 데이터 생성량이 2025년 175제타바이트(ZB)에서 2035년 2142제타바이트까지 증가할 것으로 전망했다. 1제타바이트는 10²¹ 바이트로, 이는 넷플릭스 영화 400억 편에 해당하는 데이터양이란걸 감안하면, 이는 현재 수준에서 상상 가능한 범위를 넘어선 수치다.
In this environment, existing terrestrial data centers are finding it increasingly difficult to cope with the skyrocketing demand. Data centers already consume more electricity than the entire power consumption of small and medium-sized countries, and the increased use of cooling water is fueling environmental regulations and community opposition. Competition for suitable sites is also intensifying, power grids are reaching saturation, and in some regions, large-scale data center projects are being canceled or even suspended altogether. As the recognition grows that existing data center models, which require both power and land, cannot keep pace with the growth of the AI era, companies are now reaching the conclusion that they must change their existing methods. And it is at this juncture that the concept of "space data centers" emerges as the answer.
'Conditions that Space Provides That Don't Exist on Earth'
Data centers in the AI era will consume massive amounts of power, require highly efficient cooling systems, and be able to scale rapidly to meet growing demand. These requirements are becoming increasingly difficult to meet on Earth. However, space is a rare environment where all three can be met.
The biggest advantage is the 24-hour supply of solar energy. While this varies depending on altitude, within a certain orbit, solar energy can be secured reliably without interference from weather conditions. This ability to eliminate the "irregularity" inherent in terrestrial solar power generation is particularly attractive in the AI era, where energy costs are skyrocketing.
Space also offers exceptional cooling efficiency. Terrestrial data centers, even when utilizing various technologies like bypass cooling and immersion cooling, ultimately require massive amounts of water. However, because space is a vacuum, heat can be radiatively released directly into space. This means that, theoretically, it's possible to build ultra-efficient cooling systems that operate without water, fundamentally resolving the limitations of terrestrial data centers due to cooling issues.
Another advantage is the virtually limitless space of space. While securing data center sites on Earth is becoming increasingly difficult due to numerous issues, including local regulations and environmental concerns, such constraints exist in space. Unlike on Earth, where infrastructure grows larger and causes widespread opposition from local residents and regional conflicts, in space, it's theoretically possible to expand the scale by tens or hundreds of times.
Building an 'orbital computing network' based on SpaceX Starship/Starlink
According to Ars Technica, Elon Musk, the leader of SpaceX and Tesla, has stated that "SpaceX will actually operate an orbital data center in the future," indicating that he is pursuing this concept not as a simple experiment but as an active business strategy. His plan goes beyond simply sending servers into space; it's closer to transforming the entire universe into a single, massive computing infrastructure.
Musk's vision is to integrate the three elements of "Starlink, Starship, and AI infrastructure" into a single, massive system. Starlink is already establishing a global, ultra-low-latency low-Earth orbit communication network with over 6000 satellites, and its performance is being enhanced by introducing optical communication (laser link) that minimizes data transmission delay. Starship, a next-generation rocket capable of repeatedly and inexpensively launching extremely large payloads, will eventually serve as a "truck" to transport the data center modules themselves into space.
Musk says, "Once Starship is fully commercially viable, the cost of launching data center modules into space will be competitive with the cost of building terrestrial data centers." This concept is central to a larger future strategy that connects his AI company xAI, Tesla's autonomous driving network, and SpaceX's global communications network. In other words, Musk believes a space-based AI cluster will be more powerful than any data center operating on Earth.
The Future Amazon's Jeff Bezos Envisions
Amazon's Jeff Bezos is also very realistic about the potential of space data centers. According to U.S. News & World Report, he said at a tech event in Italy, "In 10 to 20 years, we will be operating gigawatt-scale data centers in space." A one-gigawatt data center would be equivalent to the power consumption of a city with a population of about one million.
Bezos' logic differs slightly from Musk's, but the direction he's aiming for is the same. He emphasizes that "Earth's resources are finite, but space is virtually infinite." He argues that leaving Earth is inevitable to address the power and land demands of the AI era.
Amazon is already building a large-scale satellite network through Project Leo, and his space company, Blue Origin, is developing the New Glenn reusable rocket. Bezos' long-term vision is to expand AWS's cloud into space, expanding beyond its position as the world's largest cloud infrastructure company to include space-based infrastructure.
Technical challenges to be solved
While space data centers are an attractive vision, there are still numerous technical hurdles to overcome. The most significant challenge is the harsh radiation environment of space, and there's insufficient evidence to ensure that server hardware can operate normally over long periods of time. Furthermore, the risk of collisions with orbiting space debris threatens the stability of the facility. Unlike on Earth, rapid repairs are impossible, making the technology for maintaining and repairing modular servers in space still insufficient.
Furthermore, the stability of the entire system in a space environment has not been fully proven, and Earth-to-space communication latency could be critical for some services that require real-time processing. Furthermore, the volatility of launch costs also complicates feasibility calculations.
Nevertheless, with the rapid advancement of related technologies, such as rocket reuse technology, space robotics development, high-bandwidth laser communications, and modular hardware design, these limitations are increasingly being evaluated as surmountable. Furthermore, innovative technologies such as space solar power generation, orbital assembly/maintenance robots, and space-based module factories are being actively developed, continuously increasing the feasibility of space data centers.
Outlook and Implications
The emergence of space data centers is not a simple technological experiment, but a massive industry that interconnects data, AI, cloud computing, communications, and rocketry. Future data infrastructure is likely to expand beyond terrestrial boundaries and into a multi-layered network structure extending into space. As AI models become more sophisticated, the importance of computational infrastructure will explode, and this infrastructure competition will inevitably lead to a competition for space technology supremacy between nations and a competition for space infrastructure between companies. According to investment consultant K, interviewed by KOTRA's Los Angeles office, "The future envisioned by Amazon, Tesla, and SpaceX isn't simply about expanding data centers or increasing cloud market share. Their vision is to 'spaceify' humanity's entire digital infrastructure, a strategic shift to shift the computational demands of the AI era, which terrestrial infrastructure cannot handle, to space."
With terrestrial infrastructure reaching its limits due to energy, cooling, and land constraints, space is no longer science fiction but emerging as a realistic alternative. This explains why Elon Musk and Jeff Bezos, ahead of others in recognizing this trend, are focusing on space-based data center technology. To find new solutions in the era of exploding data, companies are actively increasing their investments, viewing space as a starting point for next-generation infrastructure. Ultimately, space data centers are not just a future possibility; they have the potential to become a core industry by the 2030s and 2040s. This is not a simple technological challenge; it signals the beginning of a new global competition for hegemony.