The moon is all the fun. The most interesting facts about the moon, the earth's satellite. Video about revealing facts about the Moon

The moon is a familiar yellowish-white ball, and sometimes a crescent, which can be observed in the sky on a cloudless night. It is also a huge stone ball, tirelessly rotating around our planet at breakneck speed, and it is this ball that creates ebbs and flows on the Earth’s surface.

1. One of the theories of the formation of the Moon says that the Earth once collided with another planet, and from the debris of this planet a ring was formed around the Earth, which then formed into the Moon.
2. The Moon always faces the Earth with the same side.
3. The distance from the Earth to the Moon is 384 thousand kilometers.
4. The mass of the Moon's crust makes up no more than 4 percent of the total mass. For comparison, the mass of the Earth's crust makes up up to a third of the total mass of our planet.
5. Bailey Crater is the largest crater on the Moon, with a diameter of almost 295 kilometers. It is located on the back side of the satellite and is not visible from Earth.
6. The American Apollo 6 brought with it 385 kilograms of lunar soil to Earth.
7. The volume of the Moon is approximately 49 times less than the volume of the Earth.
8. From the surface of the Earth, the Moon and the Sun are visually the same size.
9. Due to the lack of atmosphere, night on the Moon comes instantly - there is no twilight there.
10. On the night side of the Moon, as well as in the shadows, the temperature is much lower than on the sunlit areas of the surface.
11. The oldest stone carved map of the lunar surface discovered was discovered in Ireland. She is about five thousand years old.
12. The first probe sent to the Moon was the Soviet Luna 2.
13. In 1969, humanity, represented by American astronaut Neil Armstrong, first set foot on the moon.
14. The force of gravity on the Moon is six times less than on Earth.
15. From the side of the lunar surface facing the Earth, our planet is clearly visible at any time of the lunar day.
16. There is a monument to fallen astronauts on the moon. This is an aluminum figurine 10 centimeters high, depicting a man in a spacesuit.
17. Crustal vibrations and moonquakes (similar to earthquakes) also occur on our satellite. It is believed that they are caused by the gravitational interaction of our planet and the Moon itself, but this is not yet known for sure.
18. The Moon's diameter is a quarter of Earth's.
19. Astronomer Eugene Shoemaker was unable to become an astronaut due to health problems, but despite this, he made enormous contributions to lunar exploration. After his death, NASA complied with his posthumous request and sent his ashes to the Moon in 1998.
20. Moon dust smells like burnt gunpowder.
21. All moon shadows are completely black.
22. The Moon does not have a magnetic field, however, some stones brought from the Moon have magnetic properties. This is still not explained.
23. The Moon moves away from the Earth by four centimeters every year.
24. There is a theory that states that life on Earth was able to originate precisely due to the presence of a satellite exerting its gravitational influence.
25. The Moon is a large satellite and is the fifth largest satellite in the Solar System.
26. 12 people have been on the moon.
27. The substance helium-3 exists in abundance on the Moon, the extraction of which is feasible from an economic point of view, since helium-3 can more than cover all the energy needs of the Earth.
28. The Moon is recognized as international territory on which any military operations are prohibited. Also, the Moon cannot be anyone’s property.

Perhaps every person has looked at the Moon at least once in his life.

And even schoolchildren know certain facts about it. We have collected for our readers less well-known, but no less interesting facts about the satellite of our planet.

1. The moon was created as a result of a collision

The moon appeared as a result of a collision. Scientists believe that the Moon was formed from debris from the Earth and a space object the size of Mars after their collision.

2. 206 thousand 264 Moons

In order for it to be as light at night as during the day, about three hundred thousand moons would be needed, and 206 thousand 264 moons would have to be in the full moon phase.

3. People always see the same side of the moon

People always see the same side of the Moon. The Earth's gravitational field slows down the Moon's rotation around its axis. Therefore, the rotation of the Moon around its axis occurs in the same time as its rotation around the Earth.

4. The far side of the moon

The far side of the Moon is more mountainous compared to the one visible from Earth. This is explained by the force of gravity of the Earth, which has led to a thinner crust on the side facing our planet.

5. Moon Tree Seeds

More than 400 trees growing on Earth were brought from the Moon. The seeds of these trees were taken by the crew of Apollo 14 in 1971, orbited the Moon and returned to Earth.

6. Asteroid Cruithney

The Earth may have other natural satellites. The Cruithney asteroid moves in orbital resonance with the Earth and completes a full revolution around the planet every 770 years.

7. Craters on the surface of the Moon

Craters on the surface of the Moon were left by meteorites 4.1 - 3.8 billion years ago. They are still visible only because, geologically, the Moon is not as active as the Earth.

8. There is water on the moon

There is water on the moon. The Earth satellite has no atmosphere, but does have frozen water in shadowed craters and beneath the soil surface.

9. The moon is not a perfect ball

The moon is not actually a perfect sphere. It is rather egg-shaped due to the influence of Earth's gravity. In addition, its center of mass is not in the center of the cosmic body, but approximately two kilometers away from the center.

10. Crater named...

The lunar craters were first named after famous scientists, artists and explorers, and later after the names of American and Russian cosmonauts.

11. Moonquakes

On the Earth's satellite there are... moonquakes. They are caused by the gravitational influence of the Earth. Their epicenter is located several kilometers below the surface of the Moon.

12. Exosphere

The moon has an atmosphere called the exosphere. It consists of helium, neon and argon.

13. Dancing Dust

There is dancing dust on the Moon. It hovers above the surface of the Moon (more intensely at sunrise or sunset). Dust particles rise upward due to electromagnetic forces.

The Earth's satellite is more like a planet. The Earth and Moon are a double planet system, similar to the Pluto + Charon system.

15. The moon causes the tides on Earth

The moon causes the ebb and flow of the tides on Earth. The Moon's gravitational pull affects our planet's oceans. The highest tides occur during a full or new moon.

There is no secret here: the periods of revolution of the Moon around its own axis and around the Earth are the same, and for this reason the Moon faces the Earth all the time with only one side. In other words, the Moon “turns” at the same speed as it “flies” across our sky, so at the same moment in time we can observe the same picture on its surface.

At the same time, it is not entirely correct to say that we see “one side” of the satellite of our planet - in fact, about 59% of the surface of the Moon is visible from the earth, that is, almost two-thirds of the lunar disk. We call that part of the Moon that is not visible to an observer from Earth far side of the moon.

The far side of the Moon was first photographed by the Soviet lunar station Luna 3 in 1959.

Why do they say that there are seas and oceans on the Moon?

We used to call the dark areas of the surface of the Moon that we can see from Earth “lunar seas.” In fact, of course, these “seas” do not contain (and never did contain) water, and the sonorous names came to us from antiquity, when ancient astronomers thought that the Moon, like the Earth, had its own seas and oceans.

In fact, the dark areas of the Moon's surface were formed as a result of volcanic eruptions and are filled with basaltic deposits that appear much darker than the surrounding rocks.

Moon Mountains

But there are mountains on the Moon, and the most real ones, and not only mountains, but also plateaus. Externally, they differ from the lunar “seas” and plains in that they are lighter in color.

The lunar mountains are similar to the terrestrial ones in appearance, but unlike them, they were formed not as a result of tectonic processes, but as a result of collisions of giant meteorites with the lunar surface.

What would the surface of the Moon look like if it had an atmosphere and gravitational force similar to Earth's (sweep)

Where do lunar craters come from?

On the surface of the Moon we can observe craters - evidence of bombardment of its surface by asteroids, comets and meteorites. There are about half a million craters larger than 1 km in size.

Due to the absence of an atmosphere, water and significant geological processes on the Moon, the lunar craters were virtually unchanged and even ancient craters were preserved on its surface. The largest crater on the Moon is located on the far side of the Moon; it measures 2240 km in diameter and 13 km deep.

What is regolith?

The surface of the Moon is covered with a layer of rock, crushed to a dusty state as a result of meteorite bombardment over millions of years. This breed is called regolith.

The thickness of the regolith layer varies from 3 meters in areas of the lunar “oceans” to 20 m on the lunar plateaus.

Is there water on the Moon?

No water was found in samples of lunar rock brought to Earth by astronauts participating in the Apollo mission and by Soviet lunar rovers.

However, we do know that the surface of the Moon has been bombarded by comets since its formation, and comet nuclei are known to be mostly made of ice. True, this does not add optimism - under the influence of solar radiation, water atoms should have disintegrated into hydrogen and oxygen atoms and, due to the weak gravity of the Moon, simply evaporated into outer space.

However, there is another point of view: as a result of mapping the surface of the Moon by the Clementine satellite, launched by NASA in 1994, craters were discovered in the polar regions of the Moon, which are always in the shadow, and in which water in the form of ice could be preserved.

Due to the great importance of the availability of water for the future colonization of the Moon, lunar bases are planned to be located in the circumpolar regions of our satellite.

The internal structure of our planet's satellite - the Moon

What's Beneath the Moon's Surface?

The structure of the Moon, like the structure of the Earth, includes several distinct layers: crust, mantle and core. This structure is believed to have formed immediately after the formation of the Moon - 4.5 billion years ago.

The thickness of the lunar crust is believed to be 50 km. Moonquakes occur within the thickness of the lunar mantle, but unlike earthquakes, which are caused by the movement of tectonic plates, moonquakes are caused by the tidal forces of the Earth.

The Moon's core, like the Earth's core, consists of iron, but its size is much smaller and is 350 km in radius. The average density of the Moon is 3.3 g/cm3.

Does the Moon have an atmosphere?

There is an atmosphere on the Moon - this is a fact, but it is so highly discharged that it can easily be ignored - this is also a fact.

One of the sources of the lunar atmosphere are gases that are released from the lunar crust, such gases include radon gas. Another source of gases in the lunar atmosphere are gases released when the lunar surface is bombarded by micrometeorites and the solar wind.

Due to the weak magnetic and gravitational field of the Moon, almost all gases from the atmosphere escape into outer space.

Where did the Moon come from?

There are several theories to explain the formation of the Moon. Until recently, the main assumption of scientists was that the Moon was formed as a result of centrifugal forces at the early stage of the formation of the Earth. As a result of the action of these forces, part of the earth's crust was thrown into outer space and from this part the Moon was formed.
Due to the fact that, as scientists believe, throughout the history of the Earth, our planet has never had a sufficient rotation speed to confirm this theory, this point of view on the process of formation of the Moon is currently considered outdated.

Another theory suggests that the Moon formed separately from the Earth, and was subsequently simply captured by the Earth's gravitational field.

The third theory explains that both the Earth and the Moon were formed from a single protoplanetary cloud and the process of their formation took place simultaneously.

Although the above three theories of the formation of the Moon explain its origin, they all contain certain contradictions. The dominant theory of the formation of the Moon today is the theory of a giant collision of the proto-Earth with a planet-sized celestial body.

Is the Moon a satellite of the Earth or its “younger brother”?

The Moon is the largest satellite in the Solar System and in size it is only 4 times smaller than the Earth and only slightly inferior in size to Mercury. In this regard, some scientists consider the Earth-Moon pair not as a Planet-Satellite system, but as a double planet, since the size and mass of the Moon are quite large.

This is also evidenced by the fact that the center of rotation of the Earth-Moon system does not occur around the center of the Earth, but around the center of mass of both celestial bodies, which is located at a distance of 1700 km under the surface of the Earth.

Every inhabitant of our planet looked into the night sky and saw the Moon. Even schoolchildren know some generally accepted information about the planet’s satellite. But there are interesting facts about the Moon that are not known to the general public.

Earth satellite

In its current form, the Moon was formed after a collision of a planet with a space object - this is the first scientific version. The dimensions of the object are comparable to the planet Mars, and a satellite emerged from a fragment of the earth. There is a second theory that claims that the satellite was formed from a broken-off part of the Earth, which was located on the site of today's Pacific Ocean.

Another theory proves that a body of geological rocks wandered across the expanses of the universe until it was pulled by the gravity of the Earth. Some scientists suggest that the Moon was formed from asteroids sintered into a single mass. The Ring Theory is considered proven, reasoned, and popular in the scientific community. The theory states that some forming protoplanet collided with the Earth, breaking up into fragments that eventually formed a satellite.

The moon does not emit enough light to illuminate the planet as during the day; it would take 300,000 satellites in the full moon phase. Earthlings look at one side of the Moon - the satellite rotates around an axis much slower than the Earth. There are more mountains on the far side of the satellite than on the one that earthlings see. The smoothing of the mountains occurred under the influence of gravity; the visible lunar side has a thinner crust.

There are interesting craters on the surface of the Moon; they were left by space meteorites 4 billion years ago. The geological activity of the Moon is much less than that of the Earth, so the ancient craters have been preserved in their original form. Lunar craters are named after famous explorers, artists, and astronauts.

The good news for scientists was that frozen water was discovered on the satellite. Ice accumulates in shaded underground craters where there is no air. An analogue of the earth's atmosphere is the lunar exosphere, consisting of helium, argon, and neon. Contrary to popular beliefs, the satellite is not spherical in shape, it is more similar to an egg - this is due to the influence of earth's gravity.

The center of mass of the Moon is not in the middle of the cosmic body, but is shifted by 2,000 meters. Moonquakes occur regularly, caused by the planet's gravitational forces. Dancing dust hovers over the lunar expanses, which is noticeable from the Earth at sunset and dawn. Moon dust particles rise above the surface under the influence of electromagnetic forces.

The tides in the Earth's oceans are influenced by the gravitational influence of the Moon. A strong effect is observed during the full moon. Psychologists and psychiatrists have noticed that during new moon periods, exacerbations occur in patients of psychiatric clinics. There are many theories explaining this pattern, but they have not been sufficiently proven. It is known that the Moon affects human sleep - during the full moon, many earthlings experience insomnia, others have nightmares.

Lunar weather is characterized by rapid changes - per day at the equator, the temperature ranges from -173°C below zero to +127°C above zero. A day on the satellite is equal to 29.5 Earth days; in a month the sun travels its way from sunrise to sunset. Astronomers claim that the Earth has at least one more satellite. Such a satellite is called the asteroid Cruitney, which orbits the Earth every 770 years. It is possible that there are other similar satellites with an even longer rotation period.

Scientifically speaking, the Moon and Earth are a double planet system. Gradually the satellite “flies away” from the Earth. Initially, the Moon was at a distance of 22 thousand km. Today it is almost 400 thousand km. One of the interesting lunar mysteries is the lack of magnetism in the celestial body, which is proven by the readings of modern instruments and mathematical calculations of scientists of past generations. Even stranger, the astronauts brought with them stones that had full magnetic properties. This mystery has concerned modern scientists for many years.

American astronauts on the Moon

It is well known that he was the first earthling to set foot on the lunar surface. There are less public facts about the Moon and the brave earthlings who visited the distant satellite. Between 1969 and 1972, 12 Americans set foot on the moon. We present to the reader some interesting but little-known amazing facts.

The US flag, next to which astronaut B. Aldrin stands, is depicted in the most famous lunar photograph. This flag fell as the rocket lifted off for its return trip to Earth. Subsequent astronauts planted American flags, some of which still fly today, but due to strong solar radiation they lost their color and became snow-white.

The oldest earthling to visit the Moon is Alan Shepard. This American was suspended from flying due to hearing problems, but Alan overcame the disease, becoming a member of the astronaut team a few years later. Arriving on Satellite at the age of 47, he distinguished himself by making the longest throw with a golf club in the history of the sport. A little-known fact is that the courageous astronaut began to cry when he stepped onto the soft lunar firmament, but could not wipe away the treacherous tears because of his spacesuit.

On Earth, the astronauts were explained that they were representatives of all earthlings, and therefore should not perform religious rituals on the expedition, so as not to offend the feelings of believers of other religions. Buzz Aldrin elegantly circumvented the ban. After the landing was completed, he asked all earthlings on the radio to mark the historical event, thanking those who were involved in it. After this, the savvy guy took out a loaf of bread, a flask of wine, said words of gratitude from the Bible, thus performing the ritual of Christian communion.

The commander of Apollo 15 decided to honor the American and Soviet cosmonauts who died during unsuccessful launches. David Scott asked the artist to make a small statue symbolizing the heroes who died in pursuit of the cosmic dream.

Belgian Paul Hoeydonk made a figurine the size of a finger without any indication of race, nationality, or gender. The names of 14 fallen astronauts from the USA and USSR were written on the memorial plaque. In fact, at that time there were 2 more Russian cosmonauts who died, but the Americans did not know about them.

When it became clear that NASA was curtailing the program due to lack of funding, the next flight of the module would be the last - the scientific community put pressure on the management to send its representative on the flight.

Previously, only test pilots had flown, but on the last Apollo 17 they decided to take on the crew one of the many scientists who had undergone space training with almost no hope. The lucky winner was Harvard geology professor Harrison Schmitt. The professor spent almost three days on the Moon without sleep, collecting and studying lunar rocks, bringing back interesting samples that still cause a lot of controversy in narrow scientific circles.

Myths about aliens

After 1972, the Apollo program was closed. Fans of conspiracy theories dismiss the idea that the reason for curtailing space programs is a lack of funds and the financial unprofitability of flights. They consider this behavior, strange from their point of view, to mean that the astronauts discovered aliens on the Moon who threatened to destroy the Earth. The world government was forced to stop further flights under the threat of a thermonuclear explosion.

Adherents of this theory compare ancient myths and facts obtained by science, seeing confirmation of their fears. Back in the 19th century, some scientists put forward theories about the existence of aliens - evidence was provided by telescope readings. With multiple magnification, numerous craters are visible, similar to the structures of ancient cities.

Modern video recordings made by astronauts have added questions to incredulous ufologists. Some have come to the startling conclusion that the flight of American astronauts is a hoax.

The Moon is not only a planetary satellite, it is a source of inspiration for lovers or creative individuals. Moonlight is an invariable attribute of artistic canvases with night landscapes. The night light is mentioned in poems, prose, fantasy and romance novels, fairy tales for children, and horror films. The heaviest of the modern bony inhabitants of the seas is the moon fish, the leader in fertility among vertebrates.

The Moon is humanity's closest companion on our journey through outer space, as well as the only celestial body we have visited. However, despite its relative proximity to us and its apparent simplicity, our satellite continues to hide many interesting secrets, and some of them are worth learning about.

Despite the fact that, in essence, the Moon is just a dead piece of rock with extremely low geological activity, crustal movements occur there too. They are called moonquakes (by analogy with earthquakes).

There are four types of moonquakes: the first three - deep moonquakes, vibrations from meteorite impacts and thermal moonquakes caused by solar activity - are relatively safe. But moonquakes of the fourth type can be quite unpleasant. They typically range up to 5.5 on the Richter scale, which is enough to make small objects shake. These tremors last for about ten minutes. According to NASA, such moonquakes cause our Moon to "ring like a bell."

The scary thing about these moonquakes is that we have no idea what exactly is causing them. Earthquakes on Earth are usually caused by the movement of tectonic plates, but on the Moon there are simply no tectonic plates. Some researchers think that they may have some connection with the tidal activity of the Earth, which, as it were, “pulls” the Moon towards itself. However, the theory is not supported by anything - tidal forces are associated with full moons, and moonquakes are usually observed at other times.

2. Double planet

Most people are sure that the Moon is a satellite. However, many argue that the Moon should be classified as a planet. On the one hand, it is too large for a real satellite - its diameter is equal to a quarter of the diameter of the Earth, so the Moon can be called the largest satellite in the solar system, if we take this ratio into account. Pluto, however, also has a satellite called Charon, whose diameter is half the diameter of Pluto itself. But Pluto is no longer considered a real planet, so we won’t take Charon into account.

Because of its large size, the Moon is not actually in Earth orbit. The Earth and Moon revolve around each other and around a certain point in the center between them. This point is called the barycenter, and the illusion that the Moon is orbiting the Earth is caused by the fact that the center of gravity is currently located inside the Earth's crust. It is this fact that does not allow us to classify the Earth and the Moon as a double planet, but in the future the situation may change.

3. Lunar trash

Everyone knows that there was a man on the moon. But not everyone knows that Man (let’s write this word with a capital letter on purpose) used the Moon as a standard place for a picnic; The astronauts who visited the Moon left a lot of garbage there. It is believed that about 181,437 kg of artificial materials rest on the surface of the Moon.

Of course, the astronauts are not the only ones to blame - they did not deliberately scatter sandwich wrappers and banana peels on the Moon. Much of this debris was left over from various experiments, space probes and lunar rovers, some of which are still in operation today.

4. Moon Grave

Eugene "Gene" Shoemaker, a renowned astronomer and geologist, is something of a legend in his circles: he developed methods for scientifically studying cosmic impacts, and also invented the techniques that the Apollo astronauts used to explore the Moon.

Shoemaker himself wanted to become an astronaut, but was unable to get the job due to minor health problems. This remained the biggest disappointment throughout his life, but Shoemaker nevertheless continued to dream that one day he would be able to visit the Moon himself. When he died, NASA fulfilled his greatest wish and sent his ashes to the Moon with the Lunar Prospector station in 1998. His ashes remain there, scattered among the moon dust.

5. Lunar anomalies

Some pictures taken by various satellites show very strange things on the surface of the Moon. There appear to be artificial structures on the Moon, ranging in size from very tiny ones, usually shaped like a parallelepiped, to obelisks less than 1.5 km high.

Fans of paranormal phenomena even “found” among these objects a large castle “hanging” high above the surface of the Moon. All this seems to indicate an advanced civilization that previously lived on the Moon and allegedly built complex structures.

NASA has never refuted these strange theories, despite the fact that all the images were most likely faked by conspiracy theorists.

6. Moon dust

One of the most amazing and at the same time most dangerous things on the Moon is lunar dust. As everyone knows, sand penetrates everywhere on Earth, but dust on the moon is an extremely dangerous substance: it is fine, like flour, but at the same time very rough. Thanks to its texture and low gravity, it penetrates absolutely anywhere

NASA had numerous problems with lunar dust: it ripped astronauts' boots almost completely apart, penetrated ships and space suits, and caused "lunar hay fever" in unfortunate astronauts if they inhaled it. It is believed that with prolonged contact with lunar dust, any, even the most durable object can break.

Oh, by the way, this devilish substance smells like burnt gunpowder.

7. Difficulties with low gravity

Although the Moon's gravity is only one-sixth that of Earth, moving on its surface is quite a feat. Buzz Aldrin said that it would be extremely difficult to establish settlements on the Moon: the legs of astronauts in bulky spacesuits were buried in lunar dust by almost 15 cm.

Despite low gravity, human inertia on the Moon is high, making it difficult to move quickly or change direction there. If the astronauts wanted to move faster, they had to pretend to be lumbering kangaroos, which was also a problem since the Moon is full of craters and other dangerous objects.

8. Origin of the Moon

Where did the Moon come from? There is no simple and accurate answer, but, nevertheless, science allows us to make several assumptions

There are five main theories about the origin of the Moon. The fission theory states that the Moon was once part of our planet and separated from it very early in Earth's history - in fact, the Moon could just be located where the modern Pacific Ocean is. The capture theory says that the Moon simply wandered around the Universe until it was captured by Earth's gravity. Other theories say that our satellite was either formed from asteroid debris, or remains from a collision between the Earth and an unknown planet the size of Mars

The current most credible theory for the origin of the Moon is called the Ring Theory: a protoplanet (a planet in the making) called Theia collided with the Earth, and the resulting cloud of debris eventually came together and became the Moon.

9. Moon and sleep

The influence of the Moon and Earth on each other cannot be denied. However, the influence of the Moon on people is a source of constant debate. Many people believe that the full moon is the reason for people's strange behavior, but science cannot provide conclusive evidence for or against this theory. But science agrees that the moon can disrupt the human sleep cycle.

According to an experiment conducted at the University of Basel in Switzerland, the phases of the moon affect human sleep cycles in a strictly defined way. As a rule, people sleep the worst during the full moon. These results can fully explain the so-called “lunar madness”: according to the experiment and the assurances of many people, it is during the full moon that they most often have nightmares.

10. Moon shadows

When Neil Armstrong and Buzz Aldrin first walked on the Moon, they made an amazing discovery: the shadows on the Moon are much darker than the shadows on Earth due to the lack of an atmosphere. All lunar shadows are absolutely black. As soon as the astronauts stepped into the shadows, they could no longer see their own feet, despite the sun's disk burning brightly in the sky.

Of course, the astronauts were able to adapt to this, but such a contrast between dark and light areas of the surface still remained a problem. The astronauts noticed that some shadows—namely, their own—had halos. They later learned that the eerie phenomenon was explained by the opposition effect, in which some dark shadow areas appear to have a bright halo, provided that the observer looks at the shadows from a certain angle.

Moon shadows became the bane of many Apollo missions. Some astronauts found it impossible to complete spacecraft maintenance tasks because they couldn't see what their hands were doing. Others thought that they had accidentally landed in a cave - this effect was created due to the shadows cast by the slopes.

11. Lunar magnetism

One of the most interesting mysteries of the Moon is that the Moon has no magnetic field. What is surprising is that the stones that astronauts first brought from the Moon to Earth in the 1960s had magnetic properties. Maybe the stones are of alien origin? How can they have magnetic properties if there is no magnetic field on the Moon?

Over the years, science has established that the Moon once had a magnetic field, but so far no one can say why it disappeared. There are two main theories: one states that the magnetic field disappeared due to the natural movements of the Moon's iron core, and the second states that it may be due to a series of collisions between the Moon and meteorites.