Evolution of the Climate of the Earth

Abstract

The Earth is the third planet rotating around the sun that formed 
about 4.543 Ga (billion years) before the present (B.P.). There are 
three theories regarding the method of its formation, but all three 
assume that the planets including the Earth formed by coalescence 
of a disc of dust and gasses left over from the formation of the 
Sun swirling around in space in a disc-like plane