To prepare for potential manned missions to the Earth's Moon, NASA scientists are using the Hubble Space Telescope to hunt for resources, such as oxygen, that are essential for people to survive and to sustain their existence on the lunar surface. Hubble's preliminary observations and results are promising. A preliminary assessment of the Hubble observations pinpoints possible locations of ilmenite, a titanium oxide rich in oxygen, at the Apollo 17 landing region. Ilmenite is a potentially key resource because it contains easily extracted oxygen, which can be used for breathing and for rocket fuel. Since the moon doesn't have an atmosphere, scientists must hunt for oxygen in lunar soils if we are to learn to live off the “land”.
More: NASA - Hubble Prospects For Resources on The Moon