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The history of Earth is divided into four great eons, starting 4,540 mya with the formation of the planet. Each eon saw the most significant changes in Earth's composition, climate and life. Each eon is subsequently divided into eras , which in turn are divided into periods , which are further divided into epochs .
- 英語版
The geological history of the Earth follows the major...
- Earth
Earth is the third planet from the Sun and the only...
- History of the Earth
The history of the Earth describes the most important events...
- 英語版
História geológica da Terra. Representação em formato de relógio mostrando algumas unidades geológicas e alguns eventos da história da Terra.
A Brief History of Earth. The geological clock: a projection of Earth’s 4.5 Ga history on a clock (“Ma” = a million years (Megayear) ago; “Ga” = a billion years (Gigayear) ago). The circle starts at 4.6 billion years ago, then loops around to zero. Author: Woudloper Derivative work: Hardwigg; Wikimedia Commons. LEARNING OBJECTIVES.
19 de out. de 2023 · Planet Formation. The formation of the sun consumed more than 99 percent of the matter in the nebula. The remaining material began to coalesce into various masses. The cloud was still spinning, and clumps of matter continued to collide with others.
