-
Scientists have found that the temperature of the moon in the past is higher than now, mainly because the heat generated by the decay of radioactive elements in the interior of the moon is gradually decreasing, and these radioactive elements were originally the first to hit a huge impact. Due to the huge size of the Moon, in an astrophysical sense, it is unlikely that it was "captured" by the Earth and became a satellite, so many scientists speculate that the Moon was hit by a violent "meteorite-Earth" impact event, and the radioactive elements that caused the Moon to heat up also came from this impact. Scientists have found that the "cooling" of the moon has accelerated sharply in the last 1 million years, and many cliffs and mountains on the surface of the moon also come from the "**folding" effect caused by this cooling.
Using geological methods, scientists estimate that the Moon's radius has shrunk by about 50 meters in the last 1 million years.
The American magazine "Science" reported that in the past 1 billion years, many cracks have formed in the lunar shell due to the continuous cooling and contraction of the moon's internal materials. As a result, American scientists claim that the Moon is getting smaller, but because the contraction process is so slow, humans will not be able to notice this change with the naked eye, and the Moon will not disappear anytime soon.
Scientists at the Smithsonian National Air and Space Museum's Center for Earth and Planetary Research have identified 14 areas of terrain on the moon's surface known as flap steep slopes. The flap steep slope "is evidence of the recent thrust on the Moon, and the aforementioned fault looks very new," the researchers said. However, this "recent" also refers to what happened about 1 billion years ago.
It is reported that these lobe-shaped steep slopes are up to 10 meters high and more than several kilometers long. Scientists speculate that the moon has shrunk by about 100 meters based on the size of the lobe-shaped steep slope. However, humans cannot notice these changes without the aid of instruments.
According to the data, the Moon is about a quarter of the diameter of the Earth, but the contraction of the Moon will not have any effect on the Earth. Previously, studies carried out by American scientists said that the moon contains at least 100 times more water than previously expected. For example, there is frozen water in craters in dark areas of the lunar surface, and ice is also present under the lunar surface dust.
It is reported that if all melted, the ice would be enough to form an ocean that covers the lunar surface and is up to 1 meter deep. The ice may have come from an asteroid that hit the moon.
Scientists say the moon was formed after a Mars-sized object hit Earth, which ejected a large amount of material into space and then gathered into the moon. Thus, there is a magma sea on the Moon. The water contained in these magmas is eventually sprayed onto the surface of the moon in the form of a "fountain of fire".
The vast majority of the water is evaporated during the eruption, but some remains.
However, humans do not currently have access to water from the moon because they have become one with the lunar rocks. Nevertheless, with the development of technology, these discoveries still provide a potential source of water for human expeditions to the depths of the universe in the future.
-
Because the mass of the Moon is attracted to other planets, its volume will decrease accordingly.
-
This is because the surface of the moon is gradually eroded away by the cosmic winds.
-
This is because the Moon is under the influence of the universe, so it is slowly getting smaller.
-
Because the surface of the moon is slowly attracted to the earth, the mass is slowly decreasing.
-
Even the interior of the Sun is changing, big or small, is there anything strange about the Moon getting smaller?
-
Because the problem of internal structure change is a kind of cosmic mystery, which is worth continuing to explore.
-
It's just that the moon is changing, and all the stars are constantly changing, which requires us to explore slowly.
-
Even the interior of the sun is changing in a big or small way.
-
I think this is a question worth studying and exploring, and it is a strange phenomenon.
-
Of course, the Moon is not getting smaller and smaller, but it is getting farther and farther away from the Earth and looks smaller. The perigee of the Moon is 364397 kilometers from the Earth, and the apogee is 406731 kilometers, a difference of more than 40,000 kilometers.
In 1961 In the Apollo program, implemented in 1972, American astronauts placed multi-faceted laser reflectors on the moon, and scientists used lasers to aim at these reflectors and then measure the time it took for the laser to reflect back, thus measuring the distance between the Earth and the Moon. These reflectors are still available today.
Based on year-to-year measurements, scientists have found that the distance between the Earth and the Moon is at a distance of centimeters from the Earth per year. That is, the moon will look smaller and smaller. The Moon is moving away from the Earth mainly because the moment of inertia of the Earth is gradually transferred to the Moon due to the influence of tidal forces.
This has also led to a slowdown in the Earth's rotation, which increases by about 17 microseconds per year. After 4 million years, a day will add 1 minute. During the Jurassic era, 65 million years ago, the day of the Earth was 23 hours.
At that time, the moon also looked bigger.
In about 2 billion years, the Moon and Earth will form a mutual tidal lock (rotational orbital resonance). At this time, the Moon orbits the Earth for about 47 days, and the rotation of the Earth and the Moon is also 47 days. At this time, the Earth and the Moon will face each other forever.
However, the earth should not be inhabited by then, because the sun's luminosity increases by 10% every 10 years, and after 1 billion years, the surface temperature will evaporate all the surface water.
-
As for the question of why the moon is getting less and less, my personal opinion is that the moon will not become less and less in volume, but will become larger and less is an illusion, which may be the reason why the moon will be farther and farther away from the earth. Why do you say slow?
Because, the solar system.
The natural formation of all of the body's matter (planets) is the result of the Sun's ongoing nuclear fusion.
During the combustion process, a large amount of dust particles are released and gradually accumulate in different orbits and run, and the accumulation forms the performance results at this stage.
The Earth-Moon system is a system derived from the Sun, and as the Earth's volume continues to grow, the Earth's magnetic field.
The scope of involvement will be larger and larger, and the space occupied by the Earth-Moon system in the solar system will continue to expand, so that the magnetic coil provided to the moon by the magnetic field of the earth's servant ball will run in orbit, and the distance from the earth will become farther and farther, and the process of the moon getting farther away will make people observe the illusion that the volume of the moon will appear less and less.
The earth always orbits in an elliptical orbit around the sun, regardless of whether you enter the spring, summer, autumn and winter.
The moon always revolves around the earth.
It seems that the front side of the moon is always facing this side of the earth, so it is impossible to see that the moon has a rotation. Just as a person ties an object with a rope, the person rotates and the object rotates with the person, and the moon is also tied to the earth and cannot be thrown out, always revolving around this side of the earth.
In fact, in the process of the moon getting farther and farther away from the earth, the volume of the moon and the earth are all synchronous phenomena of continuous growth and development, while constantly absorbing dust particles and materials in space and all kinds of small lines of disturbances, while continuing to expand their own volume, to achieve a natural phenomenon of growing volume.
It can be seen that the volume of the moon will not become less and less, on the contrary, it will become larger and larger, but because the distance between the moon and the earth will become farther and farther away, when observing the volume of the moon on the earth, it will become less and less visually. I wonder if this is accurate?
-
The moon is a planet, it will not become smaller and smaller, the moon and the earth are both feasting and rotating, but when the angle is different, we look at the moon will also have different shapes, so there is a different shape of the moon every month.
-
It is precisely because the tidal action of the Earth on the Moon locks the direction of the Moon, so that he always has one side towards the Earth, which causes his own speed to become slower and slower. The earth has a revolution around the sun and a rotation, a day is almost 24 hours, of course the moon also has, but its revolution is around the earth, its rotation is its own rotation speed, his revolution people found a law, there is always one side is facing the earth, that is to say, half of the moon has been facing the earth, the other half has been behind, this phenomenon occurs because of the earth's tidal action on the moon lock, so the moon itself rotation speed is becoming slower and slower, The absence of a rotational speed in the Hail of Lachun Universe means that the opposition of power between it and the Earth will also change.
-
Because of the continuous destruction of the earth, the area of the moon is also shrinking, because there is a great connection between the two.
-
In fact, the moon knows that it is through a rise billions of years ago that hit the earth to form a moon-shaped body that has been maintained for billions of years, the celestial body, in fact, the mass is in recent years, it should be smaller than we imagined, we usually learn through telescopes and the Internet The moon seems to be relatively large, but in fact, it is smaller than imagined, because this may be related to a previous collision ** and our cognitive range is also related, so from small to large, everyone may think that the moon is a relatively large celestial body.
Recently, there are actually many computers or experiments in simulating an impact 21 years ago, a process of forming the moon, from the whole conclusion, in fact, after the collision with the earth, the mass of the moon may be about 1 10, astronomers have long speculated that the moon formed a giant round star and the early earth collision process was proposed in the 70s of the last century, and the researchers pointed out that the largest collision event formed a large number of debris, and finally merged into the moon is equivalent to an incomplete combination, Although Kazakh astronomers have so far not been able to explain the consistency of the lunar and earth's wreckage materials, scientists have put forward some points of view that show that the masses of ancient collision celestial bodies are different, and the two halves of the earth's structure formed the earth and moon system, followed by the small high-speed ejection celestial bodies that collide with large volumes and rapid rotation.
In order to reveal the situation that the formation and mass of the moon is smaller than imagined, now the Paris Institute of Geophysics and colleagues are analyzing, through collision simulation, it is found that the mass is more than 15% of the earth's mass of the collision weather, can not produce the chemicals seen in our mantle layer, it collides with the earth will cause a large amount of cobalt and nickel on the ground, recently an independent research institute found that the moon formed short, the earth suffered a small asteroid collision, the collision process brought a large number of rare elements to the earth, This is also part of the reason for the increase in the mass of the Earth, which causes the mass of the Moon to become smaller.
So in general, the moon is actually composed of various debris celestial bodies, rather than an independently formed celestial body, coupled with the attraction of the material on the surface of the moon, the volcanic eruption on it is relatively large, plus there is no air and water on the moon, there is no erosion by wind and rain, and it has always retained its original mass shape. Therefore, the mysterious weather that formed the moon is basically dominated by debris, so it is much smaller than expected.
-
It may be because there was a mistake in the observation, or it could be because the development of the planet was not particularly thorough, just guessing out of thin air, and it may be that there were some errors in this moon, which may lead to this reason.
-
Because this celestial body has been drifting in the universe and is often hit by some impacts, its volume will be smaller than expected.
-
Because the moon is actually formed by various debris celestial bodies, it is not an independent celestial body, so it is smaller overall.
-
Researchers at the Institut Geophysical Institute in Paris have tested more than 2 billion combined parameters in an attempt to unravel the mystery of the formation of the Moon. They concluded that the crux of the collision was that the mass of the colliding object was about one-tenth the mass of the Earth.
-
It may be because of the frequent mistakes of human beings, and it may be because of the change in calculations, it is also a very normal natural phenomenon.
-
As for the topic of why we should not explore the ocean compared to exploring the lunar universe, my personal opinion is that this question is a bit of a knowledge chain disconnect, since civilized mankind has been exploring the vast ocean. Why? Because:
The vast ocean occupies 70% of the earth's surface space, has 80% or more of the earth's biosphere of species, and is rich in food and mineral resources, which have been explored since the formation of human civilization. Moreover, in universities and colleges in various countries, there are basically majors in oceanography, among which exploring the ocean is the primary task of oceanography.
For example, in terms of ocean exploration, China has developed a variety of deep-sea exploration tools, especially the Jiaolong series detectors, which have five generations of deep-sea probes, which can dive into the depth of 1,000 meters of the ocean for exploration, and have all aspects of scientific research and exploration results, which have laid the relevant knowledge foundation and potential development direction for the sustainable survival and development of human beings.
Deep-sea research must overcome the tremendous pressure of deep water, and the deeper the sea, the greater the pressure, which is the greatest difficulty in deep-sea exploration. Therefore, artificial deep-sea probes must exceed the coefficient of enormous pressure in the deep sea in order to be successful. Otherwise, the detector will be torn apart by the tremendous water pressure.
China's Jiaolong series detectors have completed the design of anti-deep-water pressure, and have mastered the technology of deep-sea probe anti-pressure, and have become the leading ranks of deep-sea exploration in the world, and will achieve more brilliant scientific research results in deep-sea exploration.
However, we feel that the exploration of the universe is still more understanding than the ocean, and the main reason is that from the perspective of human history, after becoming a modern person, most people live on the land, and they can look up at the starry sky, because their curiosity about the universe is far greater than that of the ocean, so it is easier to spend time and energy exploring the universe.
And using the sky, the stars can guide people's lives more directly, and according to them, the astronomical calendar was born, so people pay more attention to the study of the universe, and the exploration of the deep sea is only a matter of a few hundred years, far less than the exploration of the universe. In addition, there is another reason, maybe the brain of human intelligence, his wisdom gene may be alien life, so from the subconscious, human beings want to fly out of the earth to find a new home and life.
I wonder if such readers will be clear after reading it?
No, we should advocate peace and try not to disturb them, but if their presence is a threat to us, then it is possible to intervene as necessary.
Heat dissipation, because the dog only dissipates heat through the tongue, or because it is thirsty, if it is hot, it will drool.
Left and right translation is conducive to the kill of pvp,It's not conducive to positioning,Mage even if it's ice often encounters others chasing after and has to run in a straight line,So it's still with the normal key and then the arrow key + forward to control the direction,Although it occupies two fingers,But you can go very accurately,After all, the move is accurate,And most skills will have a second of public cd,It's really easy to change the key in a second。 >>>More
Antimatter is the anti-state of normal matter. When positive and antimatter meet, the two sides annihilate each other and cancel each other, occurring ** and generating a huge amount of energy. >>>More
Yes! I found a worm in the apple.
When I was a child, I stumbled upon a worm while eating an apple, and here's what happened. >>>More