SA70. Dissertation on Land Rental by Marion Ray
It is believed that the earth is something like 4,600,000,000 years old. How it came into being is not exactly understood, a mystery. It seems to be thought that massive rocky fragments were drawn together by gravity, becoming a single rotating orb turning in such a way that all parts receive light from the sun and then are shaded from it alternately.
Eventually it cooled to a temperature at which water could exist in its liquid form and cover large parts of its surface as it does today. This in turn is surrounded by a complete but very thin layer of atmospheric gases comparable in proportion to the skin on a fruit.
It is currently thought that Life began about 4,000,000,000 years ago. Again, we do not know how it came into being, another mystery. Not only do we do not know how it began but also we do not know what it is.