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willstaruss22
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Lets say there is an exoplanet 50 light years away. The radius of this planet is 2x Earths with 8x Earths mass and a density of 5.52 g cm/3. What is the composition of this planet?
willstaruss22 said:Lets say there is an exoplanet 50 light years away. The radius of this planet is 2x Earths with 8x Earths mass and a density of 5.52 g cm/3. What is the composition of this planet?
The Earth's crust is primarily made up of oxygen (46.6%), silicon (27.7%), and aluminum (8.1%). Other elements present in smaller amounts include iron, calcium, sodium, and potassium.
The Earth's atmosphere is primarily composed of nitrogen (78%) and oxygen (21%), with trace amounts of other gases such as carbon dioxide, water vapor, and argon. This composition is unique compared to other planets in our solar system, as most have much thicker atmospheres dominated by gases like hydrogen and helium.
The Earth's core is mainly made of iron (85%) and nickel (10%), with smaller amounts of sulfur, oxygen, and other elements. This composition is similar to that of other rocky planets in our solar system.
The composition of the Earth has changed significantly over its 4.5 billion year history. In the early stages, the Earth's atmosphere was mostly composed of carbon dioxide and water vapor. As the Earth cooled, the formation of oceans and the emergence of life led to the decrease of carbon dioxide and increase in oxygen in the atmosphere.
Plate tectonics plays a crucial role in the composition of the Earth. Through the movement and collision of tectonic plates, new rocks are formed and old rocks are recycled, leading to changes in the Earth's crust and mantle. This process also affects the distribution of elements and minerals on the Earth's surface.