Scientists have indicated the presence of water on Psyche, the largest metallic asteroid in our solar system and the target of a proposed NASAmission.

• Psyche is a proposed orbiter mission concept to explore the origin of planetary cores by studying the metallic asteroid 16 Psyche.
• This asteroid may be the exposed iron core of a protoplanet, likely the remnant of a violent collision with another object that stripped off the outer crust.