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Sun could trigger massive space storms in 2013

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Sun could trigger massive space storms in 2013

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LONDON (PTI): As the Sun is waking up from a “deep slumber”, it could soon trigger massive space storms as early as 2013 which may knock out power and communication systems on Earth, scientists have warned.

The Sun follows an 11-year cycle of high and low periods of solar activity and now it is leaving a notably quiet phase, according to scientists.

During this period, they believe, there would be fiery explosions having the power of 100 hydrogen bombs that could cause twenty times more economic damage than Hurricane Katrina, the Daily Mail reported.

Smart power grids, GPS navigation, air travel, financial services and emergency radio communications can all be knocked out by intense solar activity.

Worried about the possible impact of such storms on our planet, scientists recently met in Washington to discuss how to protect Earth from the ferocious flares, which are expected sometime around 2013.

The ‘space conference’ was attended by scientists, government policy-makers and researchers.

Richard Fisher, head of NASA's Heliophysics Division, said: “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."

NASA is using dozens of satellites – including the Solar Dynamics Observatory – to study the threat.

The problem was investigated in depth two years ago by the National Academy of Sciences, in a report which outlined the social and economic impacts of severe space weather events.

But scientists believe much of the damage could be minimised if there was foreknowledge that the storm was approaching.

Putting satellites in “safe mode” and disconnecting transformers could protect them from damaging electrical surges, they said.

Preventative action, however, requires accurate forecasting – a job that has been assigned to The National Oceanic and Atmospheric Administration (NOAA.)

“Space weather forecasting is still in its infancy, but we are making rapid progress,” said Thomas Bogdan, director of NOAA's Space Weather Prediction Centre in Boulder, Colorado.

Bogdan said the collaboration between NASA and NOAA would be the key to avoid the possible damage.

“NASA's fleet of heliophysics research spacecraft provides us with up-to-the-minute information about what's happening on the Sun. They are an important complement to our own GOES and POES satellites, which focus more on the near-Earth environment,” he added.
 
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Interesting Read.. thanks for sharing, I'd be very interested in knowing what Measures both NASA and NOAA take in preparing for this.
 
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And there goes the modern world..........................a toast........to life in the stone age..........................
 
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Read the myan clander and get ready, buy big insurance policy, make a space craft and be ready for the end of the world in 2012.

The Mayan Calendar
 
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More interesting news is about search for Sun's siblings and some comets are actually captured from them.


BBC News - Most comets may have extra-solar origin
Most comets may have extra-solar origin
Page last updated at 08:40 GMT, Friday, 11 June 2010 09:40 UK
E-mail this to a friendPrintable version By Katia Moskvitch

Science reporter, BBC News

Hale-Bopp comet is believed to have formed in the Oort cloud Many famous comets may have formed in other Solar Systems, a new theory proposes.

Astronomers now believe that when our Sun was still a young star, it may have gravitationally captured the "dusty" Oort cloud comets formed elsewhere in the galaxy.

This contradicts the earlier theory that most comets were born in the Sun's protoplanetary disk.

The scientists described their findings in the journal Science.

The formation of the Oort cloud has long been a mystery.

Up until now, astronomers thought that this spherical cloud of comets lying at the outermost edge of the Solar System might have formed in the Sun's protoplanetary disk - a cloud of gas and matter that gave birth to planets, some 4.6 billion years ago.

But this hypothesis has been challenged by an international group of astronomers led by Dr Harold Levison from the Southwest Research Institute in Colorado, US.

Sun's cluster

A member of the team, Dr Ramon Brasser from the University of Nice-Sophia Antipolis, explained to BBC News that the Sun was not born alone.

Continue reading the main story
For 60 years we did not know how the Oort cloud had formed and we have been looking for an answer
Dr Roman Brasser

University of Nice-Sophia Antipolis
Instead, he said, it is believed to have formed in a cluster of about a thousand of other stars, all packed together.

"Imagine that you have a very large cloud of gas composed of mostly hydrogen that is sitting around in our galaxy.

"From some disturbances inside it, the cloud slowly starts to collapse, it shrinks, becoming more compact.

"It then forms lumps and those lumps compress even further - that is how stars are born," said Dr Brasser.

He explained that each young star then creates a huge number of small icy bodies around it in a disk from which planets gradually form.

In our galaxy's early times, many of these icy objects got "ejected" from the planetary systems and eventually became comets.

But a few stayed near the Sun, affected by strong interstellar forces. They formed, astronomers used to believe, what became known as the peculiar "dusty" Oort cloud, about a light-year from the Sun.

It was assumed to be the birthplace of the majority of the famous comets, including Halley, Hale-bopp and McNaught.

Mystery 'solved'

When the Sun's cluster dispersed, exploding from inside out, the star was left all alone.

The Oort cloud was thought to have formed around the Sun And the new study showed that its gravitational field may have been so strong that it pulled in a large cloud of comets originally formed in other solar systems.

The idea of the Oort cloud comets being extra-solar was suggested before, in the early 1990s. But back then, the methods used were not precise enough to prove the theory and it was abandoned.

Dr Levinson said that his team picked up on the same thought and used computer simulations to construct a model of a star cluster and comets - and had some interesting results.

"If we assume that the Sun's observed proto-planetary disk can be used to estimate the indigenous population of the Oort cloud, we can conclude that more than 90% of the observed Oort cloud comets have an extra-solar origin," commented the astronomer.

His colleague Martin Duncan from the Queen's University in Ontario, Canada, said that the findings lead "to the exciting possibility that the [Oort] cloud contains a potpourri that samples material from a large number of stellar siblings of the Sun".

Dr Brasser concluded that the recent findings may be an important missing link to explain the formation of the Universe.

"For 60 years we have not known how the Oort cloud formed and for 60 years people have been looking for an answer. It has been a missing piece and it might help understand the evolution and the formation of our Solar System," he said.
 
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