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5.0 billion to 4.7 billion years ago

Gas, dust, and matter from exploded stars eventually coalesced through gravity into a swirling mass known as the "solar nebula", which was centered around the newly formed sun. The swirling dust would eventually coalesce from gravity to form the planets.

4.6 billion to 4.2 billion years ago

Earth has formed from collisions of blobs of matter, planetesimals, and comet bombardment. Much of the entire planet is still molten, but an early crust starts to form the first solid surface.


4.1 billion to present

Surface water, marine life, oxygenated atmosphere, snowball earth, life on land, weathering, erosion, deposition, tectonic movements, asteroid impacts, floods, volcanism, extinction events, human life, glaciation, and civilization.

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15y ago

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