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NASA Claims Polar Shift Due In 2012 |
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Written by Administrator
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Friday, 09 December 2005 |
Solar System - Did you notice? In February 2001, the Sun did a magnetic polar shift. The next one is due again in 2012. NASA scientists who monitor the Sun say that our star's awesome magnetic field flipped 22 months ago, signaling the arrival of a solar maximum. But it wasn't so obvious to the average human.
The Sun's magnetic north pole, which was in the northern hemisphere just a few months ago, now points south. It's a topsy-turvy situation, but not an unexpected one. "This always happens around the time of solar maximum," says David Hathaway, a solar physicist at the Marshall Space Flight Center. "The magnetic poles exchange places at the peak of the sunspot cycle. In fact, it's a good indication that Solar Max is really here." |
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Earth Wobbles linked to extinctions! |
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Written by Administrator
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Wednesday, 11 October 2006 |
LONDON, England (Reuters) -- Wobbles or variations in the Earth's orbit and tilt are associated with extinctions of rodent and mammalian species, Dutch scientists said on Wednesday.
They studied rodent fossil records in central Spain dating back 22 million years and found that the rise and fall of mammal species was linked to changes in the Earth's behavior which caused cooling periods.
"Extinctions in rodent species occur in pulses which are spaced by intervals controlled by astronomical variations and their effects on climate change," Dr Jan van Dam, of the Utrecht University in the Netherlands, said.
The researchers found two cycles corresponding to the disappearance of rodent species. One lasts 2.4 million years and is linked to variations in the Earth's orbit. The other is a 1.2 million year cycle relating to shifts in the tilt on the Earth on its axis.
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