Imagine crushing a Snickers bar in your hand. Your body heat makes it softer, and when you squeeze it, the filling comes out.

That’s basically what they’re proposing. Heat and compress moon rocks to get the water and oxygen out of them, and you can use those for life support and the leftover slag for building things. If it’s all solar-powered, it’s a lot more convenient than other methods.

The sticking point here is how much we’ll be able to get out of these rocks, and how useful the leftover slag is.