History of the Earth

Its been over 4 billion years, but we don't know as much as you may think.

The earth has been around roughly 4.6 billion years ago, and has had various stages that have helped form its current and final stage in the current year 2011. About 4.54 billion years ago, the first eon was present, Hadaen, during this period of time, the earth was consistently being bombarded by meteorites which lead to heavy volcanism due to the geothermal gradient. However, about 3.8 billion years ago, the Archeon eon become apparent, which lacked various resources and elements that would be necessary for primordial life to live, such as oxygen and an ozone layer. Jumping billions of years forward, the earth started to slowly develop necessary entities for life to be sustainable. The ocean and atmosphere of the earth started to form when steam escaping from the crust of the earth interacted with gasses from the volcanoes to form the atmosphere. As for the ocean, scientists are still unsure as to how the ocean was formed, but the best guesses are because of apparent comets that contained ice.

The continents that are formed today are relatively new when considering the age of the earth, prior to what is today seven individual continents, the earth had one giant continent that was formed through the shifting core , crust, and mantles that were present. However, due to deterioration, it is thought that what continents we are living on today, are just cratons, or left overs of the previous two eons. These cratons however, are what the first form of life have been thought to walk on. The first form of life has no actual foundational evidence, but rather theories that derive from either aliens or the idea of evolution.

There are many uncertainties about how the earth had formed, due to it dating back to about 4.6 billion years ago. Only scientists and other scholars can imagine as to how it started to form, but truthfully the earth’s formation is still a mystery within itself.

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