The earth has a magnetic field, does the moon have a magnetic field, please

Early lunar experts said that the Moon's magnetic field was weak or not at all, while samples of lunar rocks showed that they were magnetized by a strong magnetic field. This is another shock to NASA scientists. Because they used to always assume that the moon rock is not magnetic.

These scientists are unable to explain the ** of these strong magnetic fields.

It took 30 years to figure out why the moon's magnetic field disappeared.

In a study of rocks brought back from the moon by the American Apollo astronauts, scientists found that the magnetic field around the Moon is less than 1,1000 times the strength of the Earth's magnetic field, and that the Moon has almost no magnetic field. However, studies have shown that the moon once had a magnetic field. Later, I don't know why I mysteriously disappeared.

Cosmic celestial bodies have magnetic fields, so why does the moon have almost no magnetic fields? It took American scientists three decades to solve this mystery. The latest issue of the British journal Nature reveals this mystery.

The Moon's magnetic field has a magnetic field from 5 to 1 billion years after its birth and continues to be 3,639 billion years old. However, when it appeared for 6-900 million years, the magnetic field suddenly disappeared. The Earth's magnetic field originates from the Earth's inner core, and scientists believe that the Earth's core is divided into an inner core and an outer core, with the inner core being solid and the outer core being liquid.

It has a small viscous coefficient and is able to flow rapidly, generating an induced current, which creates a magnetic field. In other words, the magnetic fields of all planets are generated by the action of induced electric currents.

However, the results of the analysis of the rocks on the surface of the moon tell that the moon does not have a core that can produce the action of induced electric currents. On the contrary, all the evidence tells us that the surface of the moon is a dissolved crust, a "sea" formed by flowing lava fluids, which has since cooled to its current appearance. Initially, almost all astronomers thought that humans had found the sea on the moon, but in fact, the dark part of the moon was formed by the cooling of lava fluids.

So, what exactly is the magnetic field generated from? A team of physics experts led by Professor Stockman of the Department of Earth and Planetary Planets at the University of California conducted a three-dimensional simulation experiment on this topic. After experimentation, they finally came to a conclusion.

According to the team, the light, flowing rocks form an "ocean" of lava, and when they drift from below to the surface of the moon, they leave a large amount of heavy radioactive elements like thorium and uranium under the surface. When these elements collapse, they emit a lot of heat, which is like an electric blanket that heats the inner core of the Moon.

The heated material forms a convection current with the surface of the Moon, which creates an induced electric current effect. At this time, the lunar magnetic field was also generated. However, when the radioactive element collapses beyond a certain point in time, the convection phenomenon is stopped, and the induced current effect disappears.

It is precisely because of such changes that the disappearance of the moon's magnetic field is finally caused.

Celestial bodies all have magnetic fields, and the strength is different.

I don't think there is an object with a purely magnetic field, but the strength is different.

yes.And it also has an impact on the planet.

There is a magnetic field on the Moon, but the strength of the magnetic field on the Moon is less than 1 1000 of the Earth's magnetic field. The Moon is the Earth's only natural satellite and rotates counterclockwise around the Earth from west to east. The Moon, also known as the Moon and Taiyin, has about one-eighty-one times the mass of the Earth and is the fifth largest moon in the solar system.

What is a magnetic field

A magnetic field is a field that can transmit the magnetic force between physical objects. There is a magnetic field around the magnet, and the magnetic field is a substance that has a magnetic force on the magnet placed in it, and the basic characteristic of the magnetic field is that it can exert a force on the moving charge in it, that is, the energized conductor is subjected to the force of the magnetic field in the magnetic field.

The present theory shows that the magnetic force is a relativistic effect of the electric field force, and the region affected by magnetism shows that the charge passing through the region or the magnetic poles placed in the region will be affected by mechanical force.

When an external magnetic field is applied to a substance, the inside of the magnetic material is magnetized, and many tiny magnetic dipoles appear. Magnetization is a measure of how much a substance is magnetized. The magnetic field is generated by a moving charge or a changing electric field.

It seems that the scientific community has always believed that there is no magnetic field on the moon. However, through the analysis of lunar rocks in recent years, it has been discovered that the moon is extremely magnetic. Scientists were greatly shocked by this.

However, if the lunar rock does have a magnetic field, it must have an iron core, but the available information tells us that such a huge thermal core cannot exist in the moon, nor can it be magnetic from the earth's magnetic field. Because the Moon can only get magnetism from the Earth if it is very close to the Earth, but this seems impossible because if it gets too close to the Earth, it will be disfigured by the Earth's gravity.

In 1968, when the scientific community explored space, it was discovered that there was a large concentration under the outer shell of the moon, and this large concentration actually had a suction force, and the spacecraft could not help but tilt when it flew by. But scientists can't understand much more than the weight and density of these concentrates.

And in March 1987, there was a bomber incident that caused a sensation in the world, because on the moon ** photographed by the former Soviet Union's artificial satellite, there was a bomber with the British Air Force clearly marked on the fuselage and wings. It is said that this World War II aircraft, from the ** can clearly see the plane parked on the crater of the moon, some places have been damaged by meteorites, but the fuselage is intact, and the fuselage is covered with moss. As soon as the news came out, it immediately became the world's best sex news.

But what is puzzling is that while scientists are working intensively, in July 1988 observers regretfully reported that the bomber had mysteriously disappeared. The sudden appearance and disappearance of the bomber has caused all kinds of speculation among scientists. Some people began to suspect that the bomber was made out of nothing by the former Soviet Union, but ** clearly presented those in front of people, where did this mysterious bomber come from, and why did it mysteriously disappear?

Although humans cannot give a reasonable explanation, it undoubtedly adds a lot of mystery to the moon.

There's still moss on it? Knowledge is limited! Fake leaked stuffing!

Samples from the Apollo era show that any lunar magnetosphere endures no more than 500 million years.

A new study shows that the Earth's moon has been unprotected by magnetic fields for at least 4 billion years.

NASA.

A new study has found that the moon's magnetic field may be more than transient; It probably only lasted a little geological time.

Shortly after the formation of the Moon about 4.5 billion years ago, it may have begun to produce gliding sails with a magnetic field, a protective sheath that can deflect charged particles from the Sun (SN: 11, 17).

Researchers in the Aug. 4 issue of the journal Science Advances.

Now, analysis of lunar rocks shows that any lunar magnetic field disappeared at least 4 billion years ago.

The magnetized lunar rocks brought back by the Apollo astronauts decades ago are the first indication that the Moon may have had an internal dynamo, in which molten iron-rich rock swirls within the core of a celestial body, creating a magnetic field (SN: 11 9 11

But how long such a lunar generator might last is unknown.

John Tarduno, a geophysicist at the University of Rochester in New York, said the moon's core was "really small" and it was unclear how the moon's core would sustain the generator for too long before it cooled.

In the new study, Tarduno and colleagues examined the magnetization of a small sample of Apollo rocks.

Magnetic analysis of tiny metal fragments trapped in rock crystals 3.9 billion, 3.6 billion, 3.3 billion, and 3.2 billion years ago showed that the rocks were virtually not magnetized.

But the analysis also found that a piece of lunar glass formed by Xinbo at the time of the meteorite impact about 2 million years ago was "very magnetic — just slightly weaker than today's Earth," Mr. Tarduno said. It's weird because "everyone agrees that there is no magnetic field on the moon now, and there was no magnetic field 2 million years ago," he said. "How did this happen? ”

Magnets are no longer magnetic on the moon. We all know that the Earth is arguably the most "unique" planet in the entire universe. It is precisely because of the unique conditions of the earth that we human beings can sit back and relax and thrive on this peaceful earth so comfortably, and then create a great human civilization.

Magnet is also a tool that we often use in our daily life. As we all know, magnets have "magnetism" and can play a great role on the earth; But when it comes to alien terrestrials, let's say the moon, does it still apply?

It is true that the magnetism inside the magnet is difficult to be acted upon by external forces. In fact, the "stiffness" of the magnet is far beyond our imagination. In general, we can conclude that magnets are "fit-for-all" in any case.

Friends who have studied physics in junior high school may know that magnets also have a so-called critical temperature, that is, "magnet Curie temperature". However, the magnetism of the magnet will not disappear because the Curie temperature of the magnet exceeds the boundary, it will only gradually weaken as the temperature rises, but just like the famous paradox, even if the magnetism of the magnet is lost, it can never be "nothing". Unless you change the atomic arrangement of the magnet with powerful technology.

But magnetism does not apply to the moon. The main reason why we can't "wander the earth" and play "space migration" at will is not those survival resources, but the "magnetic field". Planets like the Moon and Mars do not have a complete magnetic field system that covers the earth's surface.

Mars is better, with a little; But the moon has no magnetic field at all. So, no matter how strong the magnetic force of the magnet is, it loses its magnetism on the moon；Just like you can't ask a fish that runs fast in the water to run fast when it comes to shore.

To sum up, although magnets are magnetic on the earth, they are useless on the moon.

Magnetism is an intrinsic property of an object, and unless a phenomenon known as "demagnetization" occurs, the magnetism of the object is always present - whether you get it, whether it is on the moon or on the earth, in water or in air or in a vacuum, the magnetism of the magnet will not disappear.

Magnets still have a magnetic force in outer space. Magnetism is a property of the substance itself, regardless of where it is, but the magnetic force of a magnet on the moon will increase a little bit because it is not affected by the earth's magnetic field.

According to scientists' research, magnets are still magnetic on the moon, but the magnetism is not as strong as on Earth.

Early experts who studied the moon claimed that the moon's magnetic field was weak or that there was no magnetic field on the moon at all, but the moon rocks brought back from the moon showed that they were magnetized by a strong magnetic field. This is another shock to NASA scientists. Because they used to always assume that the moon rock is not magnetic.

No scientist has been able to give a reasonable explanation for the Moon's strong magnetic field**.