A Moment in History: The Formation of the Earth
The world now has many stars and planets. And clouds of dust are flying everywhere. One such cloud contains the Sun, and all the other planets. But the Earth is still very hot. As the Earth cools down, the first microorganisms start appearing. Nothing too complicated. Just one simple cell. But the center of the Earth is still hot to this very day!Slowly, more complicated life forms begin to take shape. Aquatic animals, mostly, but then some start crawling on land. Right now, there are many different types of animals.