Scientists have found water in glass beads on the moon.
Samples were collected by the Chinese Chang'e 5 mission in 2020.
The beads were found in lunar soil impacted by meteorites.
The water content was only a tiny fraction of the beads' composition.
Billions or trillions of these beads could exist on the moon.
Extracting water from these beads would be challenging.
The beads produce water due to the solar wind's hydrogen.
Heating the beads could extract water in future unmanned operations.
More research is needed to determine if the water is safe to drink.
This discovery shows the possibility of a water supply reservoir on the moon.