The Red Planet isn’t going anywhere. And according to prediction market traders, neither are humans, at least not before the end of this decade.

Kalshi, the regulated prediction market platform, is currently pricing the probability of SpaceX launching humans to Mars via Starship before the end of 2029 at just 18-21%. A separate but related contract asking whether SpaceX can land anything on Mars before 2030, crewed or not, sits at roughly 29-31%, with the Yes side trading around 29 cents on approximately $70,000 in total volume.

The gap between ambition and execution

Musk has never been shy about setting aggressive Mars timelines. Previous public statements from the SpaceX CEO targeted uncrewed missions to Mars by late 2026 and crewed efforts shortly thereafter. The vision of a self-sustaining human settlement on Mars by the late 2020s has been a recurring theme in Musk’s public appearances and social media posts for years.

None of these timelines have been confirmed publicly. SpaceX does not currently have an official schedule for human missions to Mars, which is precisely the kind of detail that makes prediction market traders nervous.