Why the moon has no magnetic field?
Source:
the Moon lost its magnetic field about a billion years ago
The planet's Magnetic field is a unique substance with the help of special electric charge creates a special zone protecting the planet from harmful cosmic radiation. As the portal , the Moon lost its magnetic field as a result of crystallization of the core of our satellite of approximately one billion years ago, and thus deprived of any protection from the solar wind. But what exactly caused the emergence of such a process and whether you can explain it through science?
whether the moon has a magnetic field?
A Group of scientists, led by Saeed Milani from the Massachusetts Institute of technology (MIT), for several years studying the magnetic field of the moon. It is believed that our natural satellite was formed some 4.5 billion years ago after a powerful collision of Earth with an object the size of Mars. The debris from this collision eventually was pulled together by gravity, eventually forming a sphere which we can see in the sky and in the present day. Was initially much closer to Earth than it is now. Over time, the satellite moved away, continuing to move away from our planet at a speed of several centimeters per year, and although initially, it had a strong magnetic field, it gradually disappeared completely.
In previous studies, scientists found that about four billion years ago the magnetic field was more powerful than the earth almost two times that were determined in the study samples of lunar rocks ejected during eruptions. When the stones had cooled and hardened, the tiny grains lining up along magnetic field lines, locking them direction. When three billion years ago, volcanic activity ceased completely, the consequences of such a cosmic upheaval is not long to wait, lowering the strength of the magnetic field of the satellite as low as possible.
Ancient volcanoes on the moon may be witnessing the loss of the companion's magnetic field that existed in ancient times
According to experts, due to their relatively small size, sooner or later would have lost its outer protection in any way. However, surprising in this situation is that the internal Dynamo of the earth at least 2 billion years — a good time for a lightweight object. So, although the planet Mars boasts about twice the diameter, it is widely believed that the Martian magnetic field died about four billion years ago. This conclusion may indicate the existence in the distant past of our satellite long-lived source of energy. Also, being at close distance from the Earth, the liquid core of the moon was exposed to constant gravitational forces on our planet, accelerating to speeds necessary to create high magnetic fields.
As the Moon moved farther from Earth, this effect gradually weakened, giving place to a process called crystallization nuclei. When the core of the satellite is fully crystallized, the inner Dynamo of the moon has stopped, and she turned into a light gray lifeless ball, blown from all sides by the solar wind.
Recommended
The Americans on the moon: what everyone should know?
the Upcoming cosmonautics day is my favorite holiday. It marks the triumph of the human mind: in just four thousand years Homo Sapiens went from hunter-gatherers to space explorers. 12 April 1961 Soviet cosmonaut Yuri Gagarin became the first man in ...
Why are some galaxies spiral shaped?
you Know what surprised me the most? The fact that we perceive the surrounding world as it is. Animals, plants, the laws of physics and the cosmos are perceived by many people as something so mundane and boring that they invent fairies, ghosts, monst...
Astronomers were able to see the death of another star system
In the cosmic ocean drifts a lot of mysteries about the existence of which we are unaware. One of these was uncovered five years ago, when astronomers have discovered a lonely star at a distance of 570 light years from Earth, the brightness of which ...
Related News
While we celebrated the New Year in the Solar system broke new comet
Comet C/2019 Q4 When August 30, 2019 the astronomer of the Crimean astrophysical Observatory Gennady Borisov noticed an unusual interstellar object in our Solar system, the scientific world got the opportunity to expand their know...
#video | What will the company SpaceX in 2020?
Frame from video published by SpaceX American entrepreneur Elon Musk started the company SpaceX back in 2002 with the purpose of space exploration and colonization of Mars. However, for almost 18 years of existence of the organiza...
Is there in the Universe a universal language?
a scene from the movie “the Arrival” Starting from the famous novel by Hg wells “war of the worlds”, has for over 100 years, humanity has considered the implications and conflicts that may arise as a result of first contact with p...
As ‘Mars 2020’ will help the future colonists of the red planet?
it can help a person to prepare Mars for future colonization As you know, the red planet has repeatedly tried to conquer a variety of devices made by the hands of a curious person. The Mars 2020 mission, whose launch is planned i...
You can move the Solar system?
you Can move the Solar system with engine Kaplan? is it Possible to build a star engine — a giant device to move our if we for some reason have to move to another area of the Universe? Such an unusual question to ask an astr...
Satellites interfere with astronomers to study the Universe
this is the span of 60 satellites With the growing world population and increasing concentration of people in cities, many drew attention to the night sky and how it has changed in recent years. especially noticeable in the subur...
path of the star S2, passing very close to the supermassive black hole in the center of the milky way in the representation of the artist a Fascinating time lapse taken with an extremely large (VLT) the European southern Observato...
Next to Earth found a new earth-like planet
Could a new exoplanet to be habitable? planet and Solar system are in a fairly densely populated area of our galaxy. So, we already wrote about the potential discovery of a huge amount of planets, some of which may be deemed to be...
Obtained a detailed picture of the magnetic field of the milky Way
milky way Galaxy our has its own magnetic field and it is very different from the Earth's magnetic field so much weaker than him. The study of magnetic fields in our galaxy will help to learn more about star formation, cosmic rays...
Found a piece of gold was even more valuable stone
Left — found in Australian meteorite In 2015, a resident of Australia on behalf of David hole were in search of metals in the regional Park called Maryborough. Scanning the area with a metal detector he found under a layer of yell...
Lasers have learned to find space junk
the Debris in orbit of the planet affects the Earth's environment Space debris that is formed during the development and stay of people in space every year more and more . In connection with the developing prospects of exploration...
NASA has revealed a new panorama of Mars
The first in the history of mankind photo, taken from the surface of Mars. When in 1976, the Rover “Viking-1” for the first time in the history of mankind made the first black and white photo of the surface , astronomical science ...
How space exploration can lead to the emergence of a new kind of people?
in the coming decades, a person can conquer planets and satellites of the Solar system. In order to survive, he will need to adapt to the new conditions of its space home As you know, any study is considered from the point of view...
What was 2019 for the machine InSight on the red planet?
Machine InSight approaches the surface of Mars. In November 2018, the spacecraft landed on the surface of the red planet. As a rule, landing on Mars is the most difficult task for most robotic devices. But in the case of InSight, ...
Intelligent life beyond Earth — reality or fiction?
the Famous poster that hung in the office of agent Mulder. The inscription at the bottom of the poster reads: “Want to believe” the Character of the cult TV series of the 1990s , FBI special agent Fox Mulder, is convinced of the e...
Discovered planet similar to cotton candy
In the cosmos exoplanet found from the “cotton candy.” the cosmos is full of strange and bizarre places. In recent articles we have already talked about , revolving from and even about . According to an article published on the po...
Supercluster of galaxies may be the reason for stopping star formation. Shortly after his birth, the universe was filled with gas, mostly hydrogen. Over time, gravity drew the gas up to the clouds, which turned into galaxies, whic...
Boeing Cockpit until you fly to the ISS. As it is associated with the 737 Max?
«Starliner» flew 3 days and returned to Earth. Why? Sunday, December 22, the spacecraft Boeing CST-100 Cockpit made a successful landing in new Mexico (USA). Although not everyone believed that the Starliner will make it...
The space telescope "Cheops" is going to search for alien life
the Space telescope “Cheops” When, about two decades ago opened the first exoplanet, space agencies around the world launched a real “arms race”, competing among themselves in making high quality equipment to discover new unexplor...
Toxic substances can indicate the presence of life on extrasolar planets
View on one of the exoplanets and moons in the representation of the artist Phosphine — one of the most unpleasant smelling and poisonous gases on Earth, which can be found in the dirtiest places on the planet: in the manure...
Comments (0)
This article has no comment, be the first!