How did water get on the moon?
Water is the most common molecule in the universe, after Hydrogen. It’s literally everywhere. Almost all meteors are made up of at least 20% water (ice). The reason why there is so little water on the moon is because when the sun heats the water (ice), it evaporates because of the temperature. When the water evaporates, it quickly dissipates because of the vacuum of space. Only solid water (ice) can stay on the lunar ground. And the water is only solid as long as the sun never shines on it. And that’s rare. NASA deliberately shot LCROSS at the axial pole of the moon, because near there are craters whose edges never see the light of day. And in those edges, there can be water. And as it turns out – there was water. Science predicts the right thing once again.
