In early 2026 Elon Musk announced that his space company, SpaceX, is shifting its near-term priority away from Mars and toward building a self-growing city on the Moon within the next decade, a dramatic change in direction from his long-held ambition to settle Mars. Musk made the remarks on his social platform X, saying SpaceX could deliver a lunar city in under 10 years because trips to the Moon take days and can occur frequently, whereas missions to Mars are constrained by planetary alignment and take months.
Musk’s Vision and the New Focus
Musk said SpaceX has already shifted focus to establishing what he called a “self-growing city” on the Moon, intending this to be the most practical way to “secure the future of civilisation” by expanding humanity beyond Earth. He contrasted lunar travel, which can happen every 10 days and takes about two days to complete, with Mars travel windows that occur every 26 months, requiring roughly six months in transit.
According to Musk, the lunar city project retains the broader SpaceX mission of expanding human consciousness and life off Earth while also postponing full commitment to Mars settlement. He said SpaceX still plans to begin work on a Martian city in about five to seven years, but the immediate priority is the Moon because it can be achieved faster.
What “Self-Growing” Could Mean
Musk and his team have used the term “self-growing” to imply a settlement that can gradually expand on its own once initial infrastructure is in place. This typically refers to systems that could produce essential resources locally, such as power, oxygen, and perhaps food, reducing reliance on Earth for supplies. Details on how this would work in practice have not been laid out in full technical depth, and Musk offered few specifics beyond the ambitious timeline and conceptual goals.
This plan also ties into Musk’s broader interest in using space for advanced infrastructure, including launching satellites from the Moon and potentially building space-based data centres connected to artificial intelligence initiatives.
Skepticism and Challenges
Experts in space science and engineering have expressed caution about the feasibility of a lunar city in a decade, even with reusable rockets like SpaceX’s Starship, which remains under development. Building any permanent human presence on the Moon involves massive challenges including radiation protection, sustaining life with limited local resources, creating reliable habitats, and establishing industrial capability in a harsh environment.
Some analysts point out that Musk’s timelines have historically been optimistic, with previous projections for human Mars missions slipping repeatedly. Establishing a functioning lunar settlement by 2036 would require not only breakthroughs in technology but also sustained investment, international cooperation, and solutions to logistics that have so far only been tested in theory.
Strategic and Geopolitical Context
Musk’s pivot to the Moon comes at a time when governments and private companies are intensifying efforts to return to the lunar surface. NASA’s Artemis programme aims to land astronauts on the Moon and establish a long-term presence, and rival commercial ventures such as Jeff Bezos’s Blue Origin are also advancing lunar landers and infrastructure plans. China and Russia are collaborating on their own lunar research station. These geopolitical dynamics add further momentum to lunar exploration but also raise questions about regulatory frameworks, resource rights, and global cooperation.
Broader Ethical and Economic Considerations
A city on the Moon also opens debates about cost versus benefit. Space exploration historically requires huge investment, and critics argue those funds might be more urgently needed on Earth. Proponents counter that lunar development could drive innovation, create new industries, and serve as a stepping stone to solar system-wide human presence.
There is also ethical discussion about who would live in such a settlement, how resources would be shared, and what governance models would apply far from Earth’s legal and social systems.
Conclusion
Elon Musk’s proposal to build a lunar city in less than a decade is emblematic of his ambitious and often controversial approach to space exploration. While the idea energises imaginations and fuels competition in lunar development, substantial technical, financial, and social challenges remain. Whether SpaceX’s vision becomes a reality by 2036 will depend not just on Musk’s drive, but on broad scientific progress, international cooperation, and pragmatic problem-solving in one of the most hostile environments humans have ever attempted to inhabit.