As we all know, the moon and the earth have always been inseparable, and the two planets have been with each other for more than 4 billion years.
The birth of the moon has added a lot of new things to the earth. For example, when the moon revolves around the earth, its special gravity is also attracting the water on the earth, which leads to the earth’s tides.
In fact, the earth was a long time ago, not like it is now. It has a large temperature difference between day and night. The temperature range is between the boiling point and freezing point of water. It is difficult for organisms to survive.
However, due to the appearance of the moon, the earth’s rotation and revolution cycle tends to be reasonable, so there are four seasons now, and it has become a beautiful home for human beings.
Recently, scientists have found that the moon is gradually moving away from the earth.
As we all know, the earth and the moon have mutual gravitation. That’s why we have the earth’s new things mentioned above.
And if the gravity between the earth and the moon changes and decreases, the earth will also change. Scientists say the future will bring great crisis to the earth!
What crisis will happen to the earth?
Crisis 1: the night will be darker
The departure of the moon will make the earth darker at night, because when the sun is on the other side of the earth, the moon will reflect the sun’s light to provide a certain brightness for the earth, especially in the full moon night, the sky is very bright.
But if it’s far away from the earth, it’s dark with a few stars.
Crisis 2: the earth tides will be smaller or even disappear
Because of the gravity of the moon, there will be tides in the sea on the earth. Once the moon is far away and the gravity decreases, the tides of the earth may disappear, which will indirectly affect the atmosphere and change the climate.
Crisis 3: asteroid impacts earth directly
The earth is in a relatively safe environment in orbit. Because of the huge gravity of Jupiter, it has resisted the impact of some massive asteroids or comets, while the moon has cleaned up smaller asteroids for the earth.
How many planetary impacts has the moon experienced in recent years? A large part of these impacts are caused by the earth.
It is obvious from the craters on the surface of the moon. If the earth is not protected by the moon, it will be very dangerous.
Crisis 4: the earth’s ecliptic plane will be more tilted
The earth tilts about 23.4 degrees around its axis, and the existence of the moon helps keep the earth stable at this angle.
For a planet like Mars without large satellites, its axial inclination will change dramatically with time. If the moon disappears far away, it is estimated that the earth’s tilt is likely to exceed 45 degrees.
Once such a change happens, it will be very terrible. The temperature of the north and south poles and the equator may change 180 degrees.
As glaciers melt in the north and south poles, water will occupy the world, and human land will be threatened.
Crisis 5: the earth’s day will be shorter
Without the moon, a day on the earth would last only 6 to 12 hours, and there might be 1000 days in a year. This is because of the pull of the moon, and the earth’s rotation will slow down with the passage of time.
If there were no moon, we would turn very fast. It’s going to be crazy for people who complain that 24 hours a day isn’t enough.
Therefore, the current position of the moon is very important to the earth. From this we can see how special and lucky the earth is in the universe.
I hope scientists can find a way to save this situation and avoid the emergence of this crisis.
What do you think of that? Welcome to comment area.