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Although SpaceX founder Elon Musk is known for outspokenness and controversial comments on his social media site X, he has been relatively restrained when it comes to US space policy in recent years.

But privately, Musk has been critical of NASA’s plans, suggesting that the Artemis Program has been moving too slowly and is too reliant on contractors who seek cost-plus government contracts and are less interested in delivering results.

During the last 10 days, Musk has begun airing some of these private thoughts publicly. On Christmas Day, for example, Musk wrote on X, “The Artemis architecture is extremely inefficient, as it is a jobs-maximizing program, not a results-maximizing program. Something entirely new is needed.”

Then, on Thursday evening, he added this: “No, we’re going straight to Mars. The Moon is a distraction.”

The fate of Artemis is an important question not just for NASA but for the US commercial space industry, the European Space Agency, and other international partners who have aligned with the return of humans to the Moon. With Artemis, the United States is in competition with China to establish a meaningful presence on the surface of the Moon.

In all likelihood, NASA will adopt a new “Artemis” plan that involves initiatives to both the Moon and Mars. When Musk said “we’re going straight to Mars,” he may have meant that this will be the thrust of SpaceX, with support from NASA. That does not preclude a separate initiative, possibly led by Blue Origin with help from NASA, to develop lunar return plans.