Great Escape

We Need to Be Able to Escape Planet Earth

Why the space age depends on mining


TThere are untold riches’ worth of valuable metals in space. Consider the near-Earth asteroid 1986 DA, discovered 32 years ago. Radar observations indicated that this rock, two kilometers wide, contained 10 trillion kilograms of iron, 1 trillion kilograms of nickel, 100 million kilograms…