Scientists have detected the presence of water on Psyche, the largest metallic asteroid in our solar system and the target of a proposed NASA mission. Previous observations of Psyche had shown no evidence of water-rich minerals on its surface. However, new observations from the NASA Infrared Telescope Facility in Hawaii show evidence of water or hydroxyl on its surface.<br/><br/>While the source of these molecules on Psyche remains a mystery, scientists propose a few possible mechanisms for its formation. Researchers from University of Tennessee in the US said Water-rich minerals detected on Psyche may have been delivered by carbonaceous asteroids that impacted Psyche in the distant past. The study was published in the Astronomical Journal.