Space Markets is building the world’s first regulated financial marketplace for space assets, powered by real-time in-orbit settlement. Leveraging the emerging x402 machine-payment protocol, originally designed for instant, agent-to-agent API payments, Space Markets extends this architecture into orbit, enabling autonomous agents, satellites, and ground systems to transact for capacity, spectrum, compute, and imagery with immediate, trust-minimized settlement. By using tokenization, fractional ownership, and programmable financial products with in-orbit autonomous execution, Space Markets creates liquid, transparent markets for space infrastructure and establishes the foundational financial layer for the next trillion-dollar off-planet economy.