However, people lived in an era when science and technology were not advanced, and some people now think that the Earth is flat. Also, when a lunar eclipse occurs, we can see that the Earth is round, checking its round shadow (Schottlender, 2018). Currently, space exploration can confirm that the Earth is round, and satellite images can also observe the shape of the round Earth. However, Christopher Columbus sailed to find the New World and eventually discovered that the Earth was round (DeLong, 2018). In the past, people thought that the Earth was flat, so they thought that if they went to the wider sea, they would fall into a cliff. Also, although the Earth orbits the solar system due to gravity, the Earth will be pushed out of the solar system if gravity is lost (Pappas, 2019). The Earth will lose its gravity, making it impossible to walk on the ground, and we will lose our muscles because of reduced muscle use. If the Earth is flat, it will be very different from what it is like when it is a round-shaped Earth. However, some people still reject the fact that the Earth is round because they think it is shaped like a disk around the North Pole (Brazil, 2020). With advances in science and technology, satellite imagery and space exploration have confirmed that the Earth is round. Therefore, they believed that there was a cliff if they dug to the end of the sea because they thought the Earth was flat. People in the past did not know what the Earth looked like because the technology was not advanced. Why do some people think the Earth is flat? The Earth is the only planet where life lives, and the presence of water and air necessary for the survival of life characterizes it. Subsequently, the impact of the asteroid reduced the Earth’s temperature, resulting in the formation of a primitive sea, and over time, life in the primitive sea (Alden, 2019). The impact of many asteroids increased the size and mass of the Earth, and the Earth became a sea of magma. Several materials, such as dust, were then combined around the Sun’s orbit to create a primitive planet, an asteroid. What is the history and characteristics of the Earth?įirst, nebulae in the solar system were formed, and these nebulae rotated and contracted to form the primitive Sun.
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