Luckily for us it was restored thanks to the strengthening of the inner core of the planet.
Geomagnetism originates from the deepest part of the Earth, where the iron and nickel core is found. This condition of our planet, however, was confused 565 million years ago in the history of the last century. Fortunately, everything has changed for the better.
The geomagnetic field extends from the inner core of the Earth to the so-called "solar wind". This field is relevant because, for example, the magnetosphere protects Earth from cosmic rays that could destroy the outer atmosphere and cause life on Earth.
A new study, published in Nature Geoscience, states that the Earth's magnetic field could disappear roughly 565 million years ago. Luckily for us it was restored thanks to the strengthening of the inner core of the planet.
Since RT is recovering while it is difficult to gain access to the Earth's core for direct investigation, the change in the global magnetic field is reflected in the orientation of the particles of some iron-rich minerals. That's why experts have analyzed crystals of plagioclase and clinopyroxen created 550 to 600 million years ago in Quebec, Canada.
Based on the analysis, it was concluded that the magnetosphere had passed through difficult times at that time because it was weakened and its polarity changed ten times faster than what is currently happening. Gradually, however, it began to be restored. The reason was revealed: it was caused by the solidification of the inner core of the Earth.
Several weeks ago, another study presented a controversial hypothesis and suggested that the basic elements of life on Earth really come from another planet. Such a planet would at some point hit the planet and form our natural satellite: the Moon (see this note).