Oct 02


YouTube Added: 27.09.2012

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Visit http://science.nasa.gov/ for more.

A NASA spacecraft has recorded eerie-sounding radio emissions coming from our own planet. These beautiful “songs of Earth” could, ironically, be responsible for the proliferation of deadly electrons in the Van Allen Belts.

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Apr 23


Added: 22.04.2010

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Aug 02

Earlier this morning, NASA’s Solar Dynamics Observatory (SDO) witnessed a complex magnetic eruption on the sun. The joint NASA/ESA Solar and Heliospheric Observatory (SOHO) — a mission sitting at the L1 point between the Earth and the sun — also spotted a large coronal mass ejection (CME) blasting in the direction of Earth.

It is thought that the SDO and SOHO observations are connected, making this a global magnetic disturbance affecting the whole of the Earth-facing side of the sun.

The eruption happened at around 0855 UT (3:55 am EST), when the SDO detected a C3-class solar flare originating from a cluster of sunspots (called sunspot 1092). This isn’t a large flare, but right at the same time, a filament located about 100,000 kilometers from the flare also erupted.

A “filament” is a long magnetic structure rising high above the surface of the sun filled with cool plasma. Because it is cooler than the sun’s chromosphere, when in the direct line of sight between the Earth and sun, it appears as a dark ribbon snaking across the sun’s disk. If a filament is spotted on the limb of the sun (i.e. on the side), it appears as a bright prominence arcing high into the sun’s atmosphere.

Judging by the timing, the flare and the filament erupted at the same time, suggesting they are connected via long-range magnetic field lines. The resulting shockwave emanating away from the flare site may have had a role to play in accelerating the filament when it hit the filament’s eruption zone.

Watch the video of the eruption as seen by the SDO:

C3events_strip

This sequence of events led to a huge magnetic bubble of plasma being blasted into space. As the eruption was on the Earth-facing side of the sun, the CME is heading right for us — see the SOHO video of the CME. We can expect its arrival on Aug. 3.

Skywatchers will be on high alert that day as when that CME intermingles with the Earth’s magnetosphere, we can expect some intense aurorae around polar regions.

Far from being a frightening event, this morning’s complex solar eruption — including a flare, shockwave, filament eruption and CME — is a testament to the technological ingenuity of the solar scientists and engineers who have designed the powerful solar missions that continually monitor our tumultuous star. Now we know a CME is coming, we can prepare for its arrival.

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Dec 26

Before:

National Geographic News (December 15, 2005):

North Magnetic Pole Is Shifting Rapidly Toward Russia:

New research shows the pole moving at rapid clip—25 miles (40 kilometers) a year.

Over the past century the pole has moved 685 miles (1,100 kilometers) from Arctic Canada toward Siberia, says Joe Stoner, a paleomagnetist at Oregon State University.

Now …


North Magnetic Pole Moving East Due to Core Flux

north-pole-magnetic-russia-earth-core

Earth’s north magnetic pole is racing toward Russia at almost 40 miles (64 kilometers) a year due to magnetic changes in the planet’s core, new research says.

The core is too deep for scientists to directly detect its magnetic field. But researchers can infer the field’s movements by tracking how Earth’s magnetic field has been changing at the surface and in space.

Now, newly analyzed data suggest that there’s a region of rapidly changing magnetism on the core’s surface, possibly being created by a mysterious “plume” of magnetism arising from deeper in the core.

And it’s this region that could be pulling the magnetic pole away from its long-time location in northern Canada, said Arnaud Chulliat, a geophysicist at the Institut de Physique du Globe de Paris in France. Continue reading »

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Jan 10

“The race is on for better forecasting abilities, as the next peak in solar activity is expected to come around 2012.” …and this event will be much, much more serious than you will ever be told.

The elite knows what is coming and prepares for it:
‘Doomsday’ seed vault opens in Arctic
Investors Behind Doomsday Seed Vault May Provide Clues to Its Purpose (Part 2)
African seed collection first to arrive in Norway on route to Arctic seed vault

The elite has built for themselves huge underground shelters, even cities. (Do some research.)
Now you know where all that money went that the government cannot account for.
Has the government also been preparing for the people? No, they are disposable.



Solar storms can cause colorful auroras, often seen in higher latitudes on Earth. NASA

A new study from the National Academy of Sciences outlines grim possibilities on Earth for a worst-case scenario solar storm.

Damage to power grids and other communications systems could be catastrophic, the scientists conclude, with effects leading to a potential loss of governmental control of the situation.

The prediction is based in part on a major solar storm in 1859 that caused telegraph wires to short out in the United States and Europe, igniting widespread fires.

It was perhaps the worst in the past 200 years, according to the new study, and with the advent of modern power grids and satellites, much more is at risk.

“A contemporary repetition of the [1859] event would cause significantly more extensive (and possibly catastrophic) social and economic disruptions,” the researchers conclude.

‘Command and control might be lost’

Continue reading »

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Dec 17

Dec. 16, 2008: 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.”

The magnetosphere is a bubble of magnetism that surrounds Earth and protects us from solar wind. Exploring the bubble is a key goal of the THEMIS mission, launched in February 2007.

The big discovery came on June 3, 2007, when the five probes serendipitously flew through the breach just as it was opening. Onboard sensors recorded a torrent of solar wind particles streaming into the magnetosphere, signaling an event of unexpected size and importance.

Right: One of the THEMIS probes exploring the space around Earth, an artist’s concept. [more]

“The opening was huge-four times wider than Earth itself,” says Wenhui Li, a space physicist at the University of New Hampshire who has been analyzing the data. Li’s colleague Jimmy Raeder, also of New Hampshire, says “1027 particles per second were flowing into the magnetosphere-that’s a 1 followed by 27 zeros. This kind of influx is an order of magnitude greater than what we thought was possible.”

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Oct 30

• Two planets need by 2030 at this rate, warns report
• Humans using 30% more resources than sustainable

The world is heading for an “ecological credit crunch” far worse than the current financial crisis because humans are over-using the natural resources of the planet, an international study warns today.

The Living Planet report calculates that humans are using 30% more resources than the Earth can replenish each year, which is leading to deforestation, degraded soils, polluted air and water, and dramatic declines in numbers of fish and other species. As a result, we are running up an ecological debt of $4tr (£2.5tr) to $4.5tr every year – double the estimated losses made by the world’s financial institutions as a result of the credit crisis – say the report’s authors, led by the conservation group WWF, formerly the World Wildlife Fund. The figure is based on a UN report which calculated the economic value of services provided by ecosystems destroyed annually, such as diminished rainfall for crops or reduced flood protection.

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Jul 07

Rapid changes in the churning movement of Earth‘s liquid outer core are weakening the magnetic field in some regions of the planet’s surface, a new study says.

“What is so surprising is that rapid, almost sudden, changes take place in the Earth’s magnetic field,” said study co-author Nils Olsen, a geophysicist at the Danish National Space Center in Copenhagen.

The findings suggest similarly quick changes are simultaneously occurring in the liquid metal, 1,900 miles (3,000 kilometers) below the surface, he said.

The swirling flow of molten iron and nickel around Earth’s solid center triggers an electrical current, which generates the planet’s magnetic field.

(Learn more about Earth’s interior.)

The study, published recently in Nature Geoscience, modeled Earth’s magnetic field using nine years of highly accurate satellite data.

Flip-Flop

Fluctuations in the magnetic field have occurred in several far-flung regions of Earth, the researchers found.

In 2003 scientists found pronounced changes in the magnetic field in the Australasian region. In 2004, however, the changes were focused on Southern Africa.

The changes “may suggest the possibility of an upcoming reversal of the geomagnetic field,” said study co-author Mioara Mandea, a scientist at the German Research Centre for Geosciences in Potsdam.

Continue reading »

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Apr 20

Earth gives off a relentless hum of countless notes completely imperceptible to the human ear, like a giant, exceptionally quiet symphony, but the origin of this sound remains a mystery.

Now unexpected powerful tunes have been discovered in this hum. These new findings could shed light on the source of this enigma.

The planet emanates a constant rumble far below the limits of human hearing, even when the ground isn’t shaking from an earthquake. (It does not cause the ringing in the ear linked with tinnitus.) This sound, first discovered a decade ago, is one that only scientific instruments – seismometers – can detect. Researchers call it Earth’s hum. Continue reading »

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