Why asteroid Psyche has 'high value' & considered worth $100,000 quadrillion?

The Psyche mission is a part of Nasa’s Discovery Program, focusing on cost-effective robotic space explorations. While most asteroids are comprised of rock or ice, 16 Psyche is believed to be the exposed metallic core of a deceased planet. This unique feature raises hopes that the mission will enhance our understanding of Earth’s own planetary core.