Elon Musk Says Terraforming Mars Could Come ‘Maybe Sooner’ as Pioneer Labs Takes First Step Toward Greening Red Planet

Elon Musk suggested efforts to terraform Mars could begin before the 2030s after Pioneer Labs unveiled an engineered bacterium designed to manufacture building materials from Martian resources.

Pioneer Microbe Turns Martian Resources Into Plastic

Responding on X to a post calling terraforming a major quest of the 2030s, Musk wrote, saying, "Maybe sooner."

Pioneer Labs announced sPL.001 on Tuesday as its first microbe made for Mars. The nonprofit says the bacterium can obtain nutrients from simulated Martian regolith, water and processed atmosphere without Earth-supplied fertilizer or first removing salts and perchlorates.

The organism uses acetate produced from atmospheric carbon dioxide and makes polyhydroxyalkanoate, or PHA, bioplastic. A bioRxiv preprint reports that the evolved sPL.001 strain produced more than three times the PHA yield of its parent strain under simulated Martian conditions.

Pioneer says crews could grow it inside a heated, stirred bioreactor protected from Mars’ radiation, pressure and temperature extremes. Its reference architecture estimates that equipment carried on one rocket could produce enough local bioplastic for radiation-shielded, pressurized habitats supporting a small city over roughly four years.

Engineered Organism Remains Confined Inside Bioreactor

The company designed sPL.001 not to survive freely on Mars. Without supplied acetate, it cannot grow, and Pioneer says surface conditions rapidly sterilize it. The group stresses that the microbe "has no chance of terraforming Mars on its own."

Instead, Pioneer calls sPL.001 the first of five organisms it believes would be needed to "make Mars green." NASA has studied in-situ resource utilization for years, including technologies to produce oxygen, water, fuel and construction materials from Martian resources.

Musk Keeps Pressure On Mars Timeline

Musk’s response lands alongside his renewed push for a Martian settlement. He recently said "People on Mars in roughly 5 to 7 years", after separately insisting, "I will not forget about Mars". Space Exploration Technologies Corp. (NASDAQ:SPCX) currently says Starship cargo flights to Mars could begin no earlier than 2028.

Musk has also argued that "extending consciousness to the Moon and Mars takes a lot of mass".

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