FULL HEADLINE: The $10,000 quadrillion asteroid: Experts reveal how iron, nickel and gold makes 16-Psyche so valuable as NASA prepares to visit it in 2026 Three times further away from the sun than the Earth lies an enormous lump of metal. Around 252km in diameter, the metallic 'M-class' asteroid 16 Psyche is the target of NASA's next mission to the belt of giant rocks that encircles the inner solar system. And the space agency now plans to visit it much sooner than originally planned. Not only has the launch has been brought forward one year to the summer of 2022,...