Abstract
This chapter looks at the Earth as a member of the Solar System by comparing it with other planets. As members of the Solar System, the Earth and the Moon must be considered within the broader framework of planetary origin. Considering that the age of the universe is around 15 Ga, the formation of the Solar System at about 4.6 Ga is a relatively recent event. Because it is not possible as yet to observe planetary formation in other gaseous nebulae, a variety of indirect evidence is required to reconstruct the conditions under which the planets in the Solar System formed. Geophysical and geochemical data provide the most important constraints. Most scientists now agree that the Solar System formed from a gaseous dust cloud known as the Solar Nebula, which is also discussed in the chapter. The chapter discusses impact chronology in the inner Solar System, and provides details regarding all the planets of the Solar System.
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