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Oct 19, 2023 · At its beginning, Earth was unrecognizable from its modern form. At first, it was extremely hot, to the point that the planet likely consisted almost entirely of molten magma. Over the course of a few hundred million years, the planet began to cool and oceans of liquid water formed.
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 . Eon.
May 23, 2019 · How was the Earth made? - Audrey, age 5. More than 4,500,000,000 years ago – before even the dinosaurs existed, before even the Earth existed – there was space. And in one part of space,...
- Niraj Lal
they began to turn into the planets that we know today as Earth, Mars, Venus, Mercury, and the outer planets. The first era in which the Earth existed is what is known as the Hadean Eon.
Oct 19, 2023 · Earth's early atmosphere was most likely composed of hydrogen and helium. As the planet changed, and the crust began to form, volcanic eruptions occurred frequently. These volcanoes pumped water vapor, ammonia, and carbon dioxide into the atmosphere around Earth.
Oct 19, 2023 · Formation of Earth. Our planet began as part of a cloud of dust and gas. It has evolved into our home, which has an abundance of rocky landscapes, an atmosphere that supports life, and oceans filled with mysteries.
Earth was formed approximately 4.6 billion years ago, likely as the result of a supernova (star explosion). The debris from this explosion began to collapse in on itself due to gravity, forming the sun.
