There’s been this hand-wave, this assumption, this yada yada at the core of our long-term space programs. If we can return astronauts to the moon, we’ll find ice there. And if we find that ice in sufficient quantities, we’ll break it down into hydrogen and oxygen, and yada yada, we’ll use that fuel to fly deeper into the solar system, maybe even to Mars. And if we get to Mars, we’ll find even more ice on the Red Planet. We’ll mine that, combine it with the carbon dioxide in the atmosphere, and yada yada, we’ll use that to fly the astronauts back.
It’s an idea that’s been around since the