Lunar water comes from asteroids

On Science Daily we found an interesting article on the source of water on the Moon. A significant amount of lunar waters exist in the form of hydrated minerals and computer simulations show that asteroids are a more likely source of this water than comets. Comets contain water in the form of ice, while asteroids do in the form of hydrated minerals.

According to the article the impact velocity of a typical comet would cause most of its water content to evaporate. On the contrary hydrated minerals from asteroid impacts would be absorbed into the Moon’s regolith.

7 thoughts on “Lunar water comes from asteroids”

  1. The asteroid over comet ‘water origination’ hypothesis has gained much momentum in recent years. And, if I’m not mistaken, the water discovered on the Moon is concentrated mostly in deep craters near the poles – the floors of which receive little if any direct sunlight.

    1. >>And, if I’m not mistaken, the water discovered on the Moon is concentrated mostly in deep craters near the poles

      Yes, I thought so. At least that that the case of lunar ice. However, the cited article mentions that some lunar water exist in the form of hydrated minerals, which exist beneath the lunar soil.

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