A Genuine Intellectual with Integrity, John Lewis on Asteroid Mining and Mars Settlement

“Our first goal is not to settle space, but to make space so economically attractive that it will settle itself.”


“Pass carbon dioxide in the atmosphere through electrolysis with what is essentially a ceramic membrane and split it into carbon monoxide and oxygen. Liquify the carbon monoxide and oxygen and you have rocket fuel and rocket oxidizer. The performance of a carbon monoxide/oxygen engine is inferior to that of cryogenic propellants because you’re already using carbon that’s half burned. But – it’s sufficient to get off of Mars. With a single stage.”