Nasa moon announcement: What is on the Moon?
The US space agency, Nasa, has revealed conclusive evidence of water on the Moon.
Unlike previous detections of water in permanently shadowed parts of lunar craters, scientists have now detected the molecule in sunlit regions of the Moon's surface.
Nasa has said it will send the first woman and next man to the lunar surface in 2024.
But what does this new discovery mean for this mission and future missions to the Moon?
What else is on the surface of the Moon?
BBC Science Correspondent Laura Foster explains.
Video by Laura Foster, Terry Saunders and Mattea Bubalo.