Google and SpaceX have deepened collaboration on orbital AI infrastructure through Google's Project Suncatcher, which launched a prototype satellite carrying four Tensor Processing Units aboard a SpaceX Transporter-18 mission on October 1, 2026. The test evaluates TPU performance under launch stresses, radiation, and vacuum thermal conditions while exploring solar-powered compute advantages—up to eight times terrestrial levels—in low Earth orbit. Earlier 2026 discussions covered potential launch services for larger clusters, though the companies' major $29 billion agreement covers ground-based GPU capacity through 2029 rather than orbital hardware. SpaceX pursues parallel plans for its own Starmind AI satellites targeting 2027 prototypes, amid shared challenges like laser inter-satellite links, radiation hardening, and launch economics. Key upcoming catalysts include Google's planned 2027 dual-satellite laser communication tests and regulatory filings for large satellite constellations.