When Earth Was Formed?
The Earth, our home, is ideal for us. It has in abundance all the resources we need to live: solid soil, fresh water, oxygen, and a magnetosphere that protects our atmosphere (and us) from solar radiation, among many other things that all human civilizations depend on. However, our little pale blue dot in space wasn't always like this. Many events and millions of years were necessary for it to develop the conditions it has today and that allow life. But how was this process done? Even more, when did life appear on our planet? Let's discuss it.
Summary
• The Earth and the other planets of our solar system were formed as a result of the solar nebula, a collection of gas and dust that revolved around the Sun.
• It took billions of years for the Earth to develop the conditions that make it habitable for humans and other higher mammals.
• We have evidence of the existence of living beings on Earth in the Archean eon, but they were very different from us since there was very little oxygen in the atmosphere.
• The first oxygen-producing organisms possibly appeared 3.5 billion years ago. However, due to materials trapping it, it took about 3 billion more years for the atmosphere to reach current oxygen levels.
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