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Showing posts with label Solar winds. Show all posts
Showing posts with label Solar winds. Show all posts

Tuesday, June 08, 2010

NASA Says a Coming Wave of Extreme Solar Activity Could Threaten Technology Underpinning Human Civilization


Earth and space are about to come into contact in a way that's new to human history. To make preparations, authorities in Washington DC are holding a meeting: The Space Weather Enterprise Forum at the National Press Club on June 8th.

Many technologies of the 21st century are vulnerable to solar storms. Richard Fisher, head of NASA's Heliophysics Division, explains what it's all about:

"The sun is waking up from a deep slumber, and in the next few years we expect to see much higher levels of solar activity. At the same time, our technological society has developed an unprecedented sensitivity to solar storms. The intersection of these two issues is what we're getting together to discuss".'

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Thursday, April 22, 2010

Quieter Activity on Sun May Push Britain Into a Modern-day Little Ice Age

Having just emerged from a bitterly cold winter the experts are warning that Britain could return to the mini ice-age at the end of the 17th century. This is despite claims that global warming is causing Arctic ice to melt and temperatures to rise.

The prediction of a return to an annual deep freeze follows research linking solar flares and other activity on the surface of the Sun with the weather across northern Europe. Scientists found that when the Sun is relatively calm, winters are harsh.

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Wednesday, December 17, 2008

A Giant Breach in Earth's Magnetic Field

NASA's five THEMIS spacecraft have discovered a breach in Earth's magnetic field ten times larger than anything previously thought to exist. Solar wind can flow in through the opening to "load up" the magnetosphere for powerful geomagnetic storms. But the breach itself is not the biggest surprise. Researchers are even more amazed at the strange and unexpected way it forms, overturning long-held ideas of space physics.

"At first I didn't believe it," says THEMIS project scientist David Sibeck of the Goddard Space Flight Center. "This finding fundamentally alters our understanding of the solar wind-magnetosphere interaction."

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