Impulse Space has already started working on the moon lander’s engine, which will “use a nitrous and ethane bipropellant — the same combination used successfully in space on Mira,” Mueller wrote.

And he reminded readers that Impulse took Mira from a mere design on paper to a functioning spacecraft in Earth orbit in less than 15 months.

“We’re confident in our ability to deliver this solution because of our strong track record of rapid success,” Mueller wrote of his company’s moon plans.