India's first lunar mission has found evidence of large quantities of water on its surface.
Data from the Chandrayaan probe suggests water is still being formed on the moon.
Nasa's website says it will hold a media briefing to "reveal new scientific findings about the moon" from data collected during national and international space missions.
The announcement comes two weeks before a Nasa probe purposely smashes near the moon's south pole in an attempt to find buried ice.
These images show a very young lunar crater on the side of the moon that faces away from Earth, as viewed by NASA's Moon Mineralogy Mapper on the Indian Space Research Organization's Chandrayaan-1 spacecraft. On the left is an image showing brightness at shorter infrared wavelengths. On the right, the distribution of water-rich minerals (light blue) is shown around a small crater. Both water- and hydroxyl-rich materials were found to be associated with material ejected from the crater.
Credits: ISRO/NASA/JPL-Caltech/USGS/Brown Univ.