[Today's Lisa Zate Topic] Until the birth of humans 2

 

2. Formation of the earth

4.6 billion years ago, a planet was about to be born when interstellar gas gathered in a corner of the universe. That's Sun. The gas became a huge disk-shaped vortex, and the planets of the solar system were created in this way. Planetesimals are made up of oxygen, silicon, carbon, hydrogen, iron, potassium, magnesium, aluminum, nickel, sodium, etc., and everything that exists on Earth today was born from here. Planetesimals are small earths. Planetesimals continue to grow through repeated violent collisions.

On the earth-surface of atoms, heavy components such as muddy lava and iron sank to the center and became cores, and light substances such as CO 2 and water vapor created the primitive atmosphere.

Eventually the sun begins to shine and the solar wind blows away the primordial atmosphere. The greenhouse effect of the remaining atmosphere will decrease and a serious event will occur on the earth. It continued to rain for the first time in the history of the earth. And the sea was born. If it were not for this sea, life would not have been born on the earth.

Around the same time, nine planets were born in the solar system. All of them were the alter ego of the sun born from different clouds of gas, and they were destined to be different only on the earth.

# 2 Venus-CO 2 cloud Temperature 470 degrees Atmospheric pressure 90 40 million km (inside)

# 3 Earth-Shortest distance from the sun Around January 2 Longest distance Around July 4 Rotation period 23 hours 56 minutes 4.0905 seconds Age about 4.6 billion years (geological age 4 billion years, geological age 600 million years)

# 4 Mars-80 millionkm Outside day and night, there are four seasons There used to be a large amount of water Temperature -60 degrees Atmospheric pressure 0.07 Atmospheric pressure is too small to hold the atmosphere

3.8 billion years ago The planet of water was transforming into a planet of life.　　　　

Basic story from myashdom.org