A comprehensive overview of the emerging architecture for interplanetary commerce, which relies heavily on artificial intelligence (AI) and a two-part transportation system. This future system envisions a fleet of fully reusable Earth-to-Orbit (ETO) shuttles that service massive, city-sized nuclear-powered vessels built for long-duration interplanetary transit. The sources mandate a strategic shift from kerosene (RP-1) to methalox (liquid methane and oxygen) for the ETO shuttles, as methane's clean burn enables the rapid reusability essential for an "airline-like" launch cadence. Furthermore, the reliance on methalox is critical for establishing a self-sustaining supply chain because it can be manufactured on Mars using local resources (ISRU) and can be produced sustainably on Earth as "e-methane." Finally, the entire massive logistical operation, including planetary construction and maintenance, will be performed by an AI-driven robotic workforce.But here is the kicker : This new architecture makes space exploration a GREEN Technology - not because of mere goodness of heart - but because PHYSICS demands it !