How lonely is the earth? Why do astronauts feel terrified when standing on the moon and looking at the earth?

How lonely is the earth? Why do astronauts feel terrified when standing on the moon and looking at the earth?

As we all know, the Chang'e 5 moon landing has reached the final step and will soon be a success. On this happy day, let me share with you some things about the moon.

Everyone knows that the moon is the only satellite of the earth in the universe. It is also the first celestial body ever boarded by humans. Although our country’s astronauts have not landed on the moon so far, as early as the 1960s, the American Apollo 11 and landed on the moon.

Many people may have seen pictures of the moon taken by American astronauts. Although the pictures look beautiful, we may not feel anything at the time. However, according to American astronauts, when they see the earth on the moon, they are really lonely, and they will feel terrified when they look at it. What is going on?

Before we figure out this problem, let's first look at the location of the earth!

The earth is in the center of the solar system, and the distance between the earth and Mars and Venus is relatively far. And no matter which planet the solar system is, there are many satellites around, but the earth has only one satellite around. Therefore, the earth will appear particularly lonely in the universe.

Everyone knows that the weight and volume of the moon are much smaller than the earth. Therefore, when an astronaut looks at the earth on the moon, he will see a huge ball on his head. Although there are 380,000 kilometers between the earth and the moon, looking at the earth from the moon, you will still feel that the earth is particularly prominent in the universe.

As we all know, the moon has no atmosphere and there is no air on the moon. Therefore, when sunlight hits the moon, it will be directly refracted back. The sky that astronauts see on the moon is dark. And the moon has been facing the earth, we can see a huge planet erected in space, which is like looking into the distance from a tall building, and there is a huge spacecraft close at hand. Astronauts on the moon have a feeling that the earth is about to hit the moon at any time.

Not only that, but looking at the starry sky on the moon, except for the earth, all stars are very far away from the moon, so when astronauts look at them, they will appear very small. Seeing many asteroids hanging in the sky, while the earth is surprisingly large, astronauts will naturally feel very scared.

In addition, because the revolution of the moon and the earth are basically the same, when the moon looks at the earth, you will feel that the earth has been erected in the air without moving, which is not the same as the common sense we have learned in our lives. After all, in life, we will not see a huge ball hanging in the air.

In addition to these, the extremely harsh environment and desolate scene on the moon are also far from the prosperous scene on the earth. Everyone knows that there is no life on the moon and the temperature difference between day and night is extremely large. On the moon, we see almost desolate land with no life. Looking at the earth is a blue planet full of vitality and vitality. If you look at the entire universe, you will never find a second planet like the earth.

Although in the universe, there should be other life. But so far we have not found any signs of extraterrestrial life. In stark contrast to the prosperity and prosperity on the earth is the dead silence of the universe. Therefore, when astronauts look at the earth, they will of course feel that the earth is very lonely and terrified.

At this point, we should be able to understand the idea of ​​astronauts. The earth is our only home, at least for a few decades, humans will not be able to find a second suitable planet for migration. As a unique existence in the entire universe, humans must protect our home. Otherwise, when the earth can no longer survive, humans still don't know where to find a new home! Am I right?