The objective is to produce oxygen on Mars in ten years. A high bar indeed only one that it is essential to achieve. Right now all that is required needs to be carried to Mars. Knocking oxygen of the list will be a major coup. There may be an answer as some scientists have been working on some ways this can be made a reality. We know there is ice on Mars so one way would be to melt it and co electrolyse it to produce both oxygen and hydrogen gas as fuel. Ice is plentiful and so this can be a viable method. The other is to utilise what is thought to be a salt lake underneath the surface and what is thought to be saltwater puddles nearby. This is the initial foray the team who specialise in the electrolysis are focused on.