Water Ice Deposits on the Surface of the Moon
The article presents the data regarding water presence in the lunar soil. The article gives the description of the result of water searching experiments by Clementine, Lunar Prospector, Lunar Glob and LRO space vehicles. The task to search for water in the polar caps was successfully solved by means of the space scientific apparatus - neutron spectrometer installed at the American space vehicle Lunar Reconnaissance Orbiter (LRO). The epithermal neutron flux attenuation from the surface area of the planet is an evidence of hydrogen availability in the soil. Availability of 3-5 weight fraction of hydrogen in the soil is equal to the content of water in the soil of 30-50 weight fractions. The areal variability on the Moon appears as a result of the distinction in the soil rock forming element content and slight changes in the hydrogen concentration (50-100 ppm). The main hypothesizes of the ice water origination on the Moon are discussed in the article. We detected the areas whose soil probably contains water ice.