SpaceX and Google are exploring launching data centers into space to overcome energy and cooling constraints limiting AI infrastructure expansion.

What happened: SpaceX, freshly capitalized by a $75 billion（約12兆円） IPO, is in talks with Google (Alphabet) to develop orbital data centers—computing facilities placed in space rather than on Earth. Google has already announced plans to launch prototype satellites by 2027 as part of Project Suncatcher. SpaceX CEO Elon Musk sees this as a way to address the energy and cooling challenges that constrain ground-based data center growth.

Why it matters: Data centers are critical bottlenecks for AI development. McKinsey estimates global spending on data center infrastructure could reach $7 trillion（約1100兆円） by 2030, and of SpaceX's claimed $28.5 trillion（約4600兆円） total addressable market, $26.5 trillion（約4200兆円） is tied to AI opportunities. In orbit, reduced cooling needs and constant solar power availability could unlock new capacity—but no company has ever successfully built and launched a working orbital data center, and the physics remain unproven at scale.

What to watch: Heat dissipation in the vacuum of space is the core technical hurdle. Industry experts agree it is not physically impossible but question whether the cost to overcome thermodynamic constraints makes economic sense. Google's CEO signaled confidence in a decade-long timeline, but investors should form their own assessment of whether SpaceX and Google can deliver on this moonshot before committing capital.