What are the four major types of terrestrial planets?

What are the four major types of terrestrial planets? Inside the asteroid belt of the solar system, there are four terrestrial planets-Mercury, Venus, Earth and Mars. They are composed of solid rocks and metals, with small volume, high density, slow rotation, solid surface, no halo and few satellites.

Introduction to Earth-like Planets Within the asteroid belt of the solar system, there are four Earth-like planets-Mercury, Venus, Earth and Mars. They are composed of solid rocks and metals, with small volume, high density, slow rotation, solid surface, no halo and few satellites.

Mercury, the nearest to the sun, is also a permanent victim and cannot produce a protective atmosphere. Due to frequent collisions from the universe, its surface is more and more uneven. Due to the lack of heat preservation, mercury has a great temperature difference, which is hot on the sunny side and cold on the sunny side.

Venus Venus's active volcano has the function of compensating the atmosphere, but at high temperature, the water completely evaporates. Without water, Venus cannot realize the cycle of carbon returning to the earth's crust. The endless rise of carbon dioxide concentration has led to an unstoppable greenhouse effect. Venus is too hot to melt iron and cannot breed any living things.

The distance between the earth and the sun is moderate, which can not only make water exist in liquid state, but also receive the warm irradiation of the sun, so it has the necessary balance state for life. Volcanic movement recreates the atmosphere, and the water cycle controls the concentration of carbon dioxide. When living things consume carbon dioxide, they also produce ozone layer to filter solar radiation.

Mars is trying to evolve into a hospitable home that embraces life. At first, it was partially successful, with oceans and rivers on the surface. Unfortunately, due to its small mass, there is not enough gravity to fix the atmosphere.

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