New details about the "magnetic field"

Scientists find new information about the Earth's magnetic field and the time period during which are, after reaching a "new evidence".

Scientists said on Thursday that the evidence buried in a minute crystals taken from Western Australia, showed that the magnetic field of the Earth originated 4.2 billion years ago, long before than previously thought.

The Earth's magnetic field is a cover of a protective arising from the underground, which is packed with iron molten, it serves as a guard for life on the planet's surface, as a safeguard against the solar wind stubborn-which charged particles launched by The Sun Were it not for this area of ​​the deprived land of its atmosphere and water on its surface .

Previous estimates included in research, have shown that the Earth's magnetic field grew 3.5 billion a year ago, after about one billion years of the emergence of the planet.

Scientist of geophysics said  at the University of Rochester, John Taradono, who oversaw the study, reported in the journal (Science): "solar wind was more virulent 4 billion a year ago, perhaps the ability to erosion more by 10 times what it is now, without this magnetosphere Condoms are available for a huge sculpture in the atmosphere with the elimination of water from the surface potential. "

The study focused on one of the iron ores and called Almagenthaat located within the old stone Karim zircon found in "Jack Hills" in Australia.

Crude Almajnti keeps a record of the magnetic field strength at a time when crude imprisonment within the  
 zircon. 

The researchers examined Almagenthaat inside zircon crystals, which dates from 3.2 to 4.2 billion a year, and have concluded that the Earth had a magnetic space at the time.

It is noteworthy that the erosion of the magnetic field of Mars, the planet has led to exposing the solar wind that may have brought him and the water on its surface to become a deserted planet.