Lawrence Grossman
![Lawrence Grossman](/assets/img/authors/unknown.jpg)
Lawrence Grossman
atoms hydrogen percent rock whereas
When you vaporize rock, there is very little hydrogen -- whereas 50 percent of the atoms in a rock are oxygen.
cooling expanding hot outward point rains
That vapor is very hot and expands outward from the point of impact, cooling and expanding as it goes. As it cools the vapor condenses as little droplets and rains out over the whole Earth.