An asteroid made of gold, nickel, and iron. It could be the core of an unformed or destroyed planet.
Arrival at Psyche: Late July 2029
About the Mission: https://www.jpl.nasa.gov/missions/psyche
Nasa's Psyche page: https://science.nasa.gov/mission/psyche/
Add on Bitcoin site. Hahahaha. This mission is not bringing any physical gold back.