Tech billionaires want to put data centers in space. The math could get ugly fast.

Tech giants are increasingly captivated by the concept of launching data centers into space, envisioning a future where the vastness of orbit could solve resource scarcity on Earth. With some of the industry's most influential figures, including Elon Musk of SpaceX, Jeff Bezos of Amazon, and Sundar Pichai of Google, advocating for this ambitious venture, the space economy is projected to reach a staggering $1.8 trillion by 2035, as per McKinsey & Company. Musk argues that the global demand for electricity driven by artificial intelligence (AI) cannot be sustainably met by terrestrial solutions. He asserts that building data centers in space could harness unlimited solar energy, effectively sidestepping issues related to land and power constraints faced on Earth. "Space is called 'space' for a reason," Musk quipped, highlighting the abundance of resources available in orbit. However, not everyone is convinced of the feasibility of space-based data centers. Critics like Sam Altman, CEO of OpenAI, have labeled the idea as impractical. Experts such as Kathleen Curlee, a research analyst focused on the space economy, acknowledge that while it is possible to place a data center in space, the logistical and financial challenges may outweigh the benefits. Matthew Buckley, a theoretical physicist, pointed out that the sheer cost of launching and maintaining a data center in orbit could reach astronomical figures. Despite the skepticism, projects are already underway. Google’s Project Suncatcher aims to position an AI data center in low Earth orbit by 2027, while Blue Origin seeks permission to deploy a network of 50,000 solar-powered satellites. Nvidia has also entered the fray, recently introducing hardware specifically designed for space data centers. Investors are showing strong interest in this emerging market. Starcloud, a startup focused on space data centers, achieved a valuation of $1.1 billion after a successful funding round, marking a record for speed in reaching unicorn status from Y Combinator. Other ventures, such as Aetherflux, led by Robinhood co-founder Baiju Bhatt, are also raising substantial funds, further indicating confidence in the potential of space-based infrastructure. However, significant hurdles remain. Buckley estimates that powering each data center would require approximately 450 football fields worth of solar panels, costing around $10 billion per data center, plus another $10 billion for its launch. Maintenance poses additional complexities, as space debris could damage equipment, limiting the operational lifespan of these centers to a mere five years. In conclusion, while the allure of space data centers is undeniable, the practical realities and costs involved present a daunting challenge. The vision of a sustainable space-based computing solution may be more of a long-term aspiration than an imminent reality.