In the swirling ring of asteroids between Mars and Jupiter, one space rock has attracted far more attention than any other.

It's known as 16 Psyche.

The metal-rich asteroid has made headlines because scientists once estimated, if mined, it could be worth way more than all the cash on Earth today.

Why NASA's Psyche probe is embarking on humanity's first journey to a metal asteroid comes via ChinaTechNews.com.