A critical moment in the evolution of the Earth: the planet's core is much younger than her
Source:If you imagine that started life as a gradually growing rock, it is logical to assume that the nucleus is the oldest part of the planet. At the moment it consists of two parts: a solid iron-Nickel core and the hot liquid involved in the creation of the geomagnetic field. Scientists assumed that the hard part was formed about 2.5 billion years ago, but the ancient crystals showed that the solidification occurred much later. New discovery changes the picture of the evolution of the planet.
Scientists from the University of Rochester announced that the solid core of the Earth was formed only about 565 million years ago. This is evidenced by ancient crystals produced in Sept-Ilsky complex in Quebec. Inside them there are magnetic needles, which store a record of the condition of the magnetic field of the planet at a time when they were locked inside the mineral. It was found that approximately 565 million years ago the Earth's magnetic field was very weak, and was on the verge of extinction.
The Study showed that at the critical moment and formed a solid core. It stabilized magnetic field and saved the planet from harmful space radiation.
The Field is not collapsed because the inner core began to grow and provided a new source of energy for the formation of geodynamics, explained John Tarduno, one of the study's authors.
The Researchers claim that their theory is supported by computer models, but for full confirmation, more work is needed. The study helps not only to understand the history of the Earth, but also to conduct the search for exoplanets.
The same factors that result in movement of the conductive liquid in the world, can influence the magnetic shielding exoplanets. Maybe some planets do not have such a magnetic field as we do, which means the atmosphere and the water is simply not available, — said the researcher.
Scientists are constantly making interesting discoveries. For example, recently they found that at the moment is on the surface of our satellite — the moon.
Want to read more news about science and technology? Be sure to subscribe to our where we daily write materials that are not on the site!
Recommended
Can genes create the perfect diet for you?
Diet on genotype can be a way out for many, but it still has a lot of questions Don't know what to do to lose weight? DNA tests promise to help you with this. They will be able to develop the most individual diet, because for this they will use the m...
How many extraterrestrial civilizations can exist nearby?
If aliens exist, why don't we "hear" them? In the 12th episode of Cosmos, which aired on December 14, 1980, co-author and host Carl Sagan introduced viewers to the same equation of astronomer Frank Drake. Using it, he calculated the potential number ...
Why does the most poisonous plant in the world cause severe pain?
The pain caused to humans by the Gimpi-gympie plant can drive him crazy Many people consider Australia a very dangerous place full of poisonous creatures. And this is a perfectly correct idea, because this continent literally wants to kill everyone w...
Related News
Artificial intelligence in 2019: a Terminator or not?
There is a funny psychological phenomenon: repeat any word enough times and eventually it will lose all meaning, turning into a wet rag, phonetically nothing. For many of us the phrase "artificial intelligence" has lost its meanin...
Scientists summed up the first results of the longest in the history of a scientific experiment
a Group of scientists from the UK (Scotland), Germany, and summed up the first results of the long-term scientific experiment in history. The purpose of the experiment is to study the viability of microbes in isolation for 500 yea...
The strength of titanium, density of water: engineers have created a "metal wood"
high-performance Golf clubs and aircraft wings are made of titanium, which is stronger than steel and twice as light. These properties depend on the method of stacking the metal atoms, but occasional defects in the production proc...
As the low gravity of the moon affects the health of astronauts?
the European space Agency ESA is preparing a new generation of astronauts for the next manned space missions to the moon. Recently, they began to teach the use of being dressed in heavy space suits restrict movement. But what abou...
What's going on with artificial intelligence? Analysis 16 625 works over the past 25 years
Almost all of what you hear about artificial intelligence today, it is due to deep learning. This category of algorithms works with statistics to find patterns in the data, and proved to be extremely powerful in imitating human sk...
Artificial intelligence found traces of a lost species into human DNA
Deep in Asians hidden genetic hint indicating the existence of unknown human ancestor. Remarkably, this striking hypothesis came not a man but an artificial intelligence algorithm. Welcome to the archaeology of the 21st century. A...
CRISPR has become more powerful, thanks to the "switch"
for all its stunning ability to edit the genes, mechanical CRISPR resembles a power tool with a broken switch. Just think about it: the whole mechanism of the CRISPR built in a test tube, and after completion he was always active,...
Breakthroughs in medicine and biotechnology that we expect in 2019
2018 was very cool for science. From the woman who gave birth with transplanted uterus, to the infamous scandal with children CRISPR and criminology, using genealogical tests to track down criminals last year, we never ceased marv...
The most ancient stone of the Earth was discovered... on the moon
Analysis of the lunar soil brought back by astronauts of mission "Apollo-14", showed the presence of one of the samples of particles of minerals, whose origin is an international group of scientists from Sweden, Australia and the ...
Special camera showed how birds are guided in the trees
have you ever Wondered how birds manage to live and raise Chicks in the dense foliage of tall trees? Most of them , perfectly distinguish red, green and blue colors, but their vision is one feature that allows them to easily navig...
Scientists have debunked the myth of the relation between solar activity and climate change
the North Atlantic oscillation (NAO) or periodic large-scale climate changes in the Northern hemisphere of our planet do not depend on solar cycles. To such conclusion came from a team of American and canadian scientists, tried to...
The earth is under the eye of a supermassive black hole: should we be afraid?
the Supermassive black hole Sagittarius A* at the center of our galaxy, not only sucks in nearby objects, but also emits powerful radiation. Scientists have long tried to see these rays, but they interfered with the ambient light ...
The main type of wood affects the sound of the guitar?
Many musicians would say that acoustic guitar is capable of producing good sound only if it is made of the "right" tree. They usually involve an expensive wood, which is made from threatened extinction of trees. A new study sugges...
We don't do smart kids with CRISPR. Because I can't
Experts in the field of genetic research suggest that our worst fears about editing genes won't come true, because it's too difficult to implement. You see, one of the main concerns that cause the public method of editing genes is...
Human bones found previously unknown type of blood vessels
Previously, scientists found a lot of evidence that within the human bone has a complex system of circulation. If it was not, whereas, for example, emergency injections in the bone marrow wounded soldiers so quickly helped them ge...
Scientists: the immune system depends on the mathematical theory of chaos
the human body much is known, but the immune system is still under a veil of mystery. It would seem that it works as a well coordinated mechanism, but no — scientists have found that in its processes an important role is played by...
Russian scientists: Apophis could fall to Earth in 2068
In 2068 on the Ground can fall off the asteroid , says a report prepared by scientists of the Department of celestial mechanics St. Petersburg state University. The report are going to be on the Royal readings, which will be held ...
One more mystery found in fish that live in the "dead water"
In the nature there are special type of creatures called extremophiles. They differ from all other animals that can survive in extreme conditions, for example, in extremely hot places, or very salty waters. Scientists have discove...
The mystery of the Solar system: what causes the anomalies in the orbits of TRANS-Neptunian objects
somewhere in the far reaches of the Solar system beyond the orbit of Neptune, something weird is going on. A few small celestial bodies demonstrate the behavior that is not characteristic of other objects in our system, scientists...
Why anxiety affects the weight of the body: the response of scientists
I'm Sure many have noticed that when excessive anxiety a person begins to lose weight. Still no one could give this phenomenon a full explanation, but scientists from the research Institute of SCRIPPS found that the root cause is ...
Comments (0)
This article has no comment, be the first!