And according to NASA, homemade liquid oxygen production on Mars could supply three-quarters of the propellant humans would need for exploration.
Michael Hecht, Principal Investigator, said: “When we send humans to Mars, we will want them to return safely, and to do that they need a rocket to lift off the planet.
“Liquid oxygen propellant is something we could make there and not have to bring with us.
“One idea would be to bring an empty oxygen tank and fill it up on Mars.”
It might take a while before humans put boots on Mars but it is looking increasingly likely humans will get there in the next 10 to 20 years.