Ten things you need to know about the earth

What do you want to know about the earth? Earth is the planet we live on, and it is the only world that is not named after Roman and Greek mythology. To the Romans, the earth goddess was called Tellus, which meant fertile soil. At the same time, the Greeks had an earthly goddess called Gaia, or the mother of the earth. The name used in English today (earth) comes from ancient English and German. Here are ten things you need to know about planet Earth.

1) Earth is the third planet in terms of distance from the sun.

Satellite image of Asia during the day and night.

The average distance of the earth from the sun is 149597890 km (2955720 miles), which is called a spatial unit in space and is denoted by au. Earth is located between the planets Mars and Venus, and some have called it the third rock closest to the Sun.

2) Earth is the fifth largest planet in the solar system.


The diameter of the planet Earth is about 7926 miles in the equator (12753 km). But that is not the whole story. The Earth is not perfect, but it is slightly sunken in the Arctic. As a result, the diameter of the Earth on both sides of the poles is 7899 miles or 12709 km, which is slightly less than the diameter of the Earth at the equator.

3) Earth is the only planet on which life exists.

Full image of ocean winds with details of Hurricane Floyd

All that is needed for life is a thin layer of the Earth’s atmosphere that separates us from the infinite and uninhabitable space. Earth is made up of complex reaction systems that are usually unpredictable. The air, water, and soil of the earth all underwent many changes together until the earth became present and habitable.

4) The earth has an atmosphere that has created life on this planet.

Pacific surface winds from the perspective of the Quick Scott satellite.

The composition of the Earth’s atmosphere is 77% nitrogen, 21% oxygen and a small amount of argon and carbon dioxide and water. This atmosphere has long-term effects on the planet’s climate and short-term effects on the local climate. It also protects us from most of the harmful rays coming from the sun, while preventing most meteorites from hitting the ground. As a result, most meteorites burn up and disappear as they approach Earth’s atmosphere.

5) The earth is more covered than water


Although the other name for the earth is soil, and the two words are used interchangeably, 71% of the earth is covered with water. In fact, Earth is the only planet on whose surface water remains. Perhaps one of the reasons that Earth was the only planet where life was found was the presence of water on its surface.

6) The ancient philosophers thought that the earth was the center of the universe

Different continents of the earth where different altitudes are shown in different colors

Although Aristarchus of Samoa was able to determine the size and distance of the sun and moon from the earth in the three centuries BC, he concluded that the earth revolved around the sun until the time of Cooper Nick, a Polish astronomer. He published his book Celestial Spheres in 1543. This view was not popular among astronomers.


7) The earth has 4 distinct seasons.


The reason for the existence of the seasons stems from the fact that the axes of rotation of the earth have deviated more than 23 degrees from its center. The change of seasons on Earth occurs with changes in the deflection of the planet Earth, and this is when the Earth is orbiting the Sun and its northern and southern hemispheres are absorbing different amounts of sunlight while orbiting the Sun. Alluring.

8) The earth has only one natural moon

Color image and combination of the moon

The moon is called the moon, which in Latin is called luna. The moon orbits the planet in a orbit 384,000 kilometers from Earth. To date, however, thousands of satellites or artificial moons have been built by humans and sent into Earth orbit. Also, the asteroids 3753 cruithine and 2002 aa29 have complex relationships with Earth orbit. However, these two sub-planets cannot be referred to as moons.

Due to the rocky composition of the moon and its size, the moon, like Mars, is sometimes considered a terrestrial planet (other terrestrial planets are Mercury, Venus, and Mars). The moon does not have barley, but frozen water can be seen in some of its deep cavities. The moon is the only mass of the solar system that man has stepped on.

9) The earth has a magnetic field

Picture of Antarctica

The rapid rotation of the planet Earth and its core, which is composed of molten iron and nickel, generates a magnetic field and the solar winds turn it into teardrops. The Earth’s magnetic field does not disappear in space, but has definite boundaries, and as we move through space, it does not become thinner and weaker, but completely disappears at the border point. Just like the magnetic field of a magnet, the Earth’s magnetic field has two distinct poles. When charged particles of the solar wind are trapped in the Earth’s magnetic field, they collide with air molecules (toward the Earth’s magnetic poles) and form an aurora borealis, also known as the Earth’s south and north lights.

10) Because we live on Earth, we can not see the whole planet.

Earth rise from Apollo 8’s point of view

In order to be able to see the whole planet, we have to go into space. In space, we will be able to see the entire planet from a certain distance, just like other planets that we can see from the surface of the earth. When we are high enough in space, we can use sensitive tools to evaluate the relationships and balances between the oceans, the air, the earth, and life on Earth. Observing the Earth from space allows us to see the Earth in its entirety. Scientists around the world have been able to add to our knowledge by using observations and sharing their findings about celestial bodies as well as the earth.