Monday, 17 November 2014

Tiny Meteorites May Hold The Secrets of the Solar System

solar system

Researchers have recently come across some interesting new clues into the origins of our Solar System. By discovering some magnetic fields engrained in ancient miniscule meteorites—known as chondrites—they now understand that similar electrical signals might have helped to form the solar system. The secret, they believe

 lies within the tiny stony grains which make these chondrites, stony grains called “chondrules.”
“Chondrules themselves created through quick melting events within the dusty gas cloud—the solar nebula—that encircled the young sun. As chondrules cooled, iron-bearing minerals within them became magnetized like bits on the hard disk through the local magnetic field in the gas. These magnetic fields are maintained within the chondrules even down to the current day,” attests the Arizona State University researchers

Roger Fu, planetary scientist at MIT at Cambridge explains “Magnetic fields can introduce viscosity into the disk, essentially making the gas in it stickier.”
Furthermore, Mordecai MacLow, American Museum of National History astrophysicist, explains “This is the first direct information we have on the magnetic fields in the early solar system. It’s a really difficult measurement that was very cleanly performed—it stands out as a real tour de force,” explains Study co-author, Steve Desch, stated “The recent experiments probe magnetic minerals in chondrules never measured before. Additionally, they reveal that each chondrule is magnetized just like a little bar magnet, howver, with ‘north’ pointing in random directions.”

He continues, “My modeling for the heating events shows that shock waves passing through the solar nebula is exactly melted most chondrules. The background magnetic field could be amplified by up to 30 times, depending on the strength and size of the shock wave.”
The research team published the results of their study in the journal Science, on November 13
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