SpaceX now uses the calendar of the Moon to base the settlement schedule, rather than the calendar of Mars. Elon Musk has made a transition to a “self-expanding city” upon the Moon surface citing that the frequency of launches made to the Moon supports quick engineering testing in contrast with the 26 months by which most Mars launches are launched.
It is not a difference in rhetoric that is taking place but in orbital mechanics and logistics. Musks stated that the expeditions to Mars take 26 months and it only took six months to get to Mars, but the trips to the moon could be made much more frequently and the days could be counted. With this kind of framing, settlement is no longer an act of heroism, but industrial: fly, learn, rebuild, repeat.
Industrial variant of “repeat” is that in the case of SpaceX, Starship should more closely resemble a transportation infrastructure, but not a prototype. The Moon strategy is grounded on the capabilities absent at the routine level as high flight rate, rapid reuse, and propellant exchange between satellites in space. This scheme is also next to NASA Artemis architecture in which Starship will function as a Human Landing System. That is a mix that renders the Moon a proving ground where such engineering may be employed in refueling, docking, life support, landing dynamics, may be applied on a government mission and on a privately proclaimed settlement mission.
One of the ways that the concept of the Moon-city does not seem to be a poster is the fact that SpaceX has described a Starship HLS internal volume of about 600 cubic meters, with two airlocks and an elevator to reach the surface after a vertical landing. Higher mounted landing thrusters have also been described by the company that will reduce the blasting of the regolith on touchdown. They are decisions by design, that is, decisions concerning a given problem: how to put something really big on the ground without making the point of landing a sandblaster.
The gating factor is one launch as compared to series of launches behind the scene. This is envisaged in the Starship missions to the moon, which will involve the use of multiple tanker flights to stock a depot and then refuel the lander version in the space. A further argument in the Artemis ecosystem has been on simplified architectures that will potentially make operations simpler, yet such concepts have their own tradeoffs: making vehicles simpler to reduce operational complexity contradicts reusability, and moving more operations out of the NASA-based paradigm of Orion can run up against insulated culture of crew safety.
The second and minor constraint is regulatory throughput. The requirement posed by SpaceX to be able to develop as quickly as it can is in conflict with the possibility or otherwise of flying between the larger spacesports across the US. This is a new development in federal authorization that has referred to the developments made on Starship operations at the LC-39A plant of Kennedy Space Center as well as the examination of up to 44 yearly launches in the same place and an increased outlook of 146 yearly launches in other locales with approvals and infrastructure fulfilling the planned cadence-language incorporated in the FAA environmental review summarize of Starship operation at LC-39A. It is not the point but the thing it represents: settlement discussion is impossible in the absence of the noise models, wildlife mitigation and prosaic treading of the launch licensing.
The Mars is not pushed out of SpaceX story due to Moon-first focus. Musk has written that plans to build a city on Mars would be on a very longer scale, which would be initiated in parallel after the lunar push becomes popular. Nothing has changed the engineering rationale, but a close destination provides much quicker feedback and a quicker feedback is the feature which can convert a hard technology into a functioning one.
In practice, the Moon will become a location where deep-space aspirations must perform like infrastructure projects, in the sense of docking adapters, transferring propellant, landing plume control, and flying to it and back without having to wait two years before the next one.
