Magneetstormen & Zonnevlammen

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Op maandag 2 augustus 2010 16:58 schreef luckyb1rd het volgende:
schijnt maar een kleintje te zijn, hooguit wat lichtspectakel in noorden van zweden..


booring.... wij ik willen een dikke X KLasse zonnevlam

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Op dinsdag 3 augustus 2010 12:00 schreef Scrummie het volgende:
Wij in NL? Ik gok van helemaal niet...

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Op dinsdag 3 augustus 2010 23:11 schreef YuckFou het volgende:

[..]

Op 538 was er aan het eind van de dag een of andere sterrekundige die beweerde van wel, dus ik ga vannacht wel buiten staan hopend op iets moois

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Op dinsdag 3 augustus 2010 08:23 schreef Resistor het volgende:

[..]

Want dat wil ik echt niet.

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Op woensdag 4 augustus 2010 00:06 schreef -CRASH- het volgende:
Tis nu wel een heftigge storm
[ afbeelding ]

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Op woensdag 4 augustus 2010 09:19 schreef Frutsel het volgende:
Vanavond nieuwe kansen hoorde ik net?

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Big solar flare captured on photo

One of the fastest big solar eruptions in years has been observed streaking away from the sun at more than 2.2 million mph by two NASA spacecraft.

The flare occurred Aug. 1 and created a massive sun eruption called a coronal mass ejection that struck Earth's magnetic field Tuesday, creating dazzling aurora displays. NASA's twin STEREO spacecraft recorded the eruption and beamed images of the sun storm back to Earth. ( Photo of the sun eruption.)

The material ejected from the sun was seen speeding toward Earth at more than 1,000 kilometers per second, or just over 2.2 million mph. Another wave from the event was expected to hit Earth's magnetic field on Wednesday. NASA's two STEREO spacecraft, which monitor the sun's weather in 3-D, also recorded a video of the sun eruption.

"These kinds of eruptions are one of the first signs that the sun is waking up and heading toward another solar maximum expected in the 2013 time frame," NASA officials said in a statement. The sun goes through a regular 11-year activity cycle. The last solar maximum occurred in 2001 and its recent extreme solar minimum was particularly weak and long-lasting, the space agency added.

Coronal mass ejections are eruptions of charged particles from the sun that stream out over several hours. They can contain several billion tons of plasma and expand away from the sun at speeds of up to 1 million mph. At such speeds, they can cross the 93 million-mile gulf between the Earth and sun in two to four days.

The material belched from the sun during the Aug. 1 flare is not expected to cause any disturbances on Earth other than creating spectacular auroras. Auroras are created when charged particles are caught by Earth's magnetic field and interact with the atmosphere above the poles.

The Aug. 1 solar flare was a moderate C-class flare. The coronal mass ejection it set off created a strong so-called geomagnetic storm that lasted nearly 12 hours enough time for auroras to spread from Europe to North America, NASA officials said in a statement.

Stronger solar storms could cause adverse impacts to space-based assets and technological infrastructure on Earth.

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Op woensdag 15 september 2010 11:21 schreef Frutsel het volgende:
Prachtige foto's weer van het Noorderlicht van gisteren uit Noorwegen

[ afbeelding ]


Zie ook:
Geen zonnevlekken na 2016: Kleine ijstijd op komst?

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Op woensdag 15 september 2010 11:21 schreef Frutsel het volgende:
Prachtige foto's weer van het Noorderlicht van gisteren uit Noorwegen

[ afbeelding ]


Zie ook:
Geen zonnevlekken na 2016: Kleine ijstijd op komst?

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Op woensdag 22 september 2010 11:52 schreef _Flea_ het volgende:
Ooit ga ik dit zelf nog eens bekijken. Is het effect groter in de zomer of in de winter?

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Op woensdag 22 september 2010 11:23 schreef Roel_Jewel het volgende:
http://apod.nasa.gov/apod/ap100920.html

[ afbeelding ]

.


Meer geweldige pics @ http://www.flickr.com/photos/salomonsen/

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Op dinsdag 28 september 2010 22:03 schreef meteo-online het volgende:
This morning at 0948 UT, tiny sunspot 1110 unleashed a C1-class solar flare. The sunspot has started to grow and this event could herald a period of higher activity from the region.

Solar flare

Bron Spaceweather

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New study sheds different light on the sun's impact on Earth
A new study has shed light on the sun's impact on the Earth's climate, confounding current thinking about solar cycles and how they influence temperatures on Earth.

Previously scientists had thought that radiation reaching the Earth rises and falls in line with the Sun's activity, which during the 11-year solar cycle goes though periods of low and high activity.

But research by Imperial College, London and the University of Colorado in the U.S. examining solar radiation levels from 2004 to 2007 -- a period of declining solar activity -- revealed that levels of visible radiation reaching the Earth actually increased during the period.

Using data collected by NASA's SORCE (SOlar Radiation and Climate Experiment) satellite, which launched in 2003, the scientists were able to scrutinize the full solar spectrum -- x-ray, ultraviolet (UV), visible (VR), near-infrared, and total solar radiation -- and compare it to earlier, less comprehensive data.

Joanna Haigh, leader author of the study published in the journal Nature told CNN: "What the data has shown, rather unexpectedly, is that the decline in ultra-violet radiation is much larger than anticipated. But more surprisingly the visible radiation actually increased as solar activity was declining."
aigh, a professor of atmospheric physics, says that UV radiation is mostly absorbed in the stratosphere but visible radiation gets through to the earth's surface. The observed increase in VR, despite declining solar activity, may have caused small rises in temperature.

But, as Haigh points out, the research, which covers a short period, comes with some caveats.

"The sun has been behaving very strangely. Its magnetic activity is lower than it has been for several hundred years, perhaps. And so the fact that it's doing strange things in its spectrum is perhaps not that unexpected," she said.

It's also just starting to come out of a very long period (two years) of minimum activity, she says.

As the Sun's activity starts to increase, "it will also be very, very interesting to see if the visible radiation starts to decline," Haigh says.

Haigh is aware that research which contradicts existing ideas about how the Sun's activity affects the Earth's climate is likely to fuel some climate skepticism.

But she says the solar cycles cancel each other out, going up and down over roughly an 11-year period.

"They [the solar cycles] are contributing nothing to long-term global warming," she said, "and it has no bearing on what we understand about greenhouse gases and their influence on climate."

Robert von Fay-Siebenburgen, a solar physicist from the UK's University of Sheffield told CNN: "What has been published is very interesting and a little unexpected, to be honest."

But he says that despite the Sun being our closest star, scientists still know very little about it.

"We have a better understanding of the internal processes -- what is below the surface of the Sun. However, what is above that and how it affects the Earth's climate is very poorly understood," he said.

"But what Professor Haigh has found is very exciting and an important step towards increasing our understanding."

Sir Brian Hoskins, director of the Grantham Institute for Climate Change at Imperial College, London said in a statement: "Studies like this are vital for helping us create a clear picture of how our climate is changing and through this, to work out how we can best protect our planet."

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Sterkere zon doet aarde afkoelen
LONDEN - 'Een toename van zonne-activiteit doet de aarde afkoelen'. Dat beweren Britse wetenschappers die hun nieuwe studie hebben gepubliceerd in het vakblad 'Nature'. De uitkomst zal het klimaatdebat ongetwijfeld opnieuw doen oplaaien, al waarschuwen wetenschappers meteen dat de ontdekking geen lange-termijnargument is voor klimaatsceptici.

Het onderzoek, dat is gebaseerd op gegevens van een satelliet die de energie-output van de zon registreert, gooit een aantal bestaande opvattingen over de relatie tusen de zon en de opwarming van onze planeet overhoop. De resultaten focussen op een momentopname tussen 2004 en 2007 en zullen ongetwijfeld worden ingezet door degenen die nog steeds geloven dat de invloed van de mens op de stijgende temperatuur op aarde overschat wordt.

Verdere research nodig
Professor Joanna Haigh van het Imperial College in Londen leidde het onderzoek. Zij zegt: "De resultaten stellen alles in vraag wat we meenden te weten over de invloed van de zon op ons klimaat. Maar verdere research is nodig. Ons onderzoek omspande slechts drie jaar, het is mogelijk dat die een uitzondering op de regel vormden."

Gerust is Haigh er echter niet op. "Indien we bevestiging krijgen van de huidige resultaten, betekent het dat we de invloed van de zon niet onderschat hebben, maar overschat", verklaart ze. "Klimaatsceptici hebben er naar mijn mening geen argument bij. Ons onderzoek bewijst gewoon dat we nog niet zoveel over de invloed van de zon afweten."

Mens en natuur
Professor Sir Brian Hoskins van het Grantham-instituut voor Kilmaatverandering zegt: "We weten dat het klimaat zowel door menselijke activiteit als door natuurkrachten wordt beďnvloed. Dit onderzoek verbetert ons begrip over de manier waarop de zon ons klimaat mee bepaalt. Studies als deze helpen ons begrijpen hoe het klimaat verandert, en hoe we onze planeet het beste kunnen beschermen."

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Op dinsdag 19 oktober 2010 15:23 schreef Jumparound het volgende:
zeg salvador, als je een uitlegt naar wat voor een plaatje we kijken en waarom het uitzonderlijk zou moeten zijn kan je misschien antwoord krijgen

GREAT FILAMENT

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Op dinsdag 19 oktober 2010 15:25 schreef Frutsel het volgende:

[..]



Hij doelt op de grote ronding die je kan onderscheiden tussen alle pijltjes... tis een enorm rondje...

je ziet het hier ook.. degene die de muis bediende wijst daar ook op

GREAT FILAMENT

In het engels "The Giant Filament"

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Zonnestorm op komst

De zon vertoont vreemde activiteiten. Ringen, linten en bellen wijzen op een heftige aanstaande zonnestorm.

Als deze week je satellietnavigatie het niet doet, dan komt dat door de zon. Allerlei ruimtevaartorganisaties maken melding van heftige activiteit op het oppervlakte van onze ster. Als eerste maakte het Cabreja Mountain Observatory op Gran Canaria melding van een soort lint op de zuidelijke helft.



Al snel zagen andere observatoria dat ook. Hier een close-up van het Campinas observatorium in Brazilië.




Terwijl die goed werd bestudeerd, bleek op de noordelijke helft een tweede te zitten. Beide linten zijn 400.000 kilometer lang. Dat is tien keer de omtrek van de aarde.



Op sommige beelden van de Nasa Solar Obervatry leken de linten zich aaneen te sluiten, tot een ring. Ook namen sommige astronomen ‘bellen’ van superheet plasma waar op het oppervlakte.

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Op dinsdag 19 oktober 2010 15:23 schreef Jumparound het volgende:
zeg salvador, als je een uitlegt naar wat voor een plaatje we kijken en waarom het uitzonderlijk zou moeten zijn kan je misschien antwoord krijgen

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Op dinsdag 19 oktober 2010 19:00 schreef Frutsel het volgende:
Ziet eruit als een voorbereiding op
NASA: Zonnestorm 2013 betekent einde van ICT
of
NASA: voorbereiden op verwoestende zonnestorm 2012

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Op dinsdag 19 oktober 2010 19:55 schreef Jumparound het volgende:

[..]

salvador kennende zal dat idd wel zijn denkrichting zijn

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Op dinsdag 19 oktober 2010 23:48 schreef Salvad0R het volgende:

[..]

Doe je vaker aannames?

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Op dinsdag 19 oktober 2010 23:48 schreef Salvad0R het volgende:

[..]

Doe je vaker aannames?

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Crackling with Solar Flares

Fast-growing sunspot 1112 is crackling with solar flares. So far, none of the blasts has hurled a substantial CME, or coronal mass ejection, toward Earth. In addition, a vast filament of magnetism is cutting across the sun's southern hemisphere. This filament is so large it spans a distance greater than the separation of Earth and the moon. A bright 'hot spot' just north of the filament's midpoint is UV radiation from sunspot 1112. The proximity is no coincidence; the filament appears to be rooted in the sunspot below. If the sunspot flares, it could cause the entire structure to erupt. Thus far, none of the flares has destabilized the filament.

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Op donderdag 21 oktober 2010 15:30 schreef Frutsel het volgende:
[ afbeelding ]
[..]

En wat als het allemaal ontploft richting de aarde?

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Op donderdag 28 oktober 2010 21:35 schreef Fogel het volgende:
Dus we kunnen noorderlicht verwachten?

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Op donderdag 28 oktober 2010 21:35 schreef Fogel het volgende:
Dus we kunnen noorderlicht verwachten?

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Op vrijdag 29 oktober 2010 11:13 schreef Infection het volgende:

[..]

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70% chance on M-class solar flare in 24 hours
ACTIVE SUNSPOT: NOAA forecasters say there is a 70% chance of M-class solar flares during the next 24 hours. The source of the blast would be active region 1121 emerging over the sun's eastern limb:

Indeed, AR1121 is already crackling with an M2-flare on Nov. 4th and an M1-flare on Nov. 5th. So far none of the flares has been geo-effective, but this could change as the sun's rotation turns the blast site toward Earth in the days ahead. Readers with solar telescopes are encouraged to monitor developments.

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Op zondag 7 november 2010 10:18 schreef YuckFou het volgende:
Fantastisch mooie plaatjes&gifs in dit topic

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Op maandag 8 november 2010 08:09 schreef Infection het volgende:
Waar kun je bekijken wat de zon nu precies aan het doen is? Ik heb hier namelijk nog naar gezocht, maar ik kwam alleen maar plaatjes tegen die om de zoveel uur ververst worden. Ik zoek iets wat meer live is. Iemand enig idee?

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Op vrijdag 12 november 2010 01:53 schreef -CRASH- het volgende:
Misschien wel een handig weetje....
Als er een waarschuwing komt met Kp 7 dan zou het kunnen
dat je het poollicht aan de lage noordelijke horizon
kunt zien. Vanaf Kp8 zijn de kansen groter...
En bij Kp9 ga dan gerust naar buiten en kijk omhoog.

Op dit moment: Kp4
Komende 24 uur max.: Kp4
[ afbeelding ]

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Die zonnestorm. Is dat nou een reele dreiging? Hoe groot is de kans werkelijk dat er zoiets gebeurd?

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The tension was just too great. On Nov. 21st around 1600 UT, a twisted filament of solar magnetism suddenly untwisted, producing a towering eruption off the sun's northwestern limb.



Earth was not in the line of fire. No geomagnetic storms or auroras are expected as a result of the blast. Moreover, now that the filament has relaxed, it poses little threat for future eruptions. There is, however, another filament that bears watching.

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Op maandag 22 november 2010 09:56 schreef Ared het volgende:
[Ik denk dat het een low frequency / high impact risico is. Sinds het electrische tijdperk is het al een paar keer voorgekomen, de meest bekende waren in 1859 (het Carrington event) en 1989.

Lomp gezegd zou je op basis van de afgelopen 200 jaar kunnen zeggen dat eens in de honderd jaar de aarde geraakt wordt door een storm die schade doet. Hoe groot de schade dan is hangt af van de kracht van de storm en of het een echte voltreffen of een schampschot is. Op zich is dat dus een kleine kans - voor een individueel jaar misschien wel minder dan 1%. Het probleem is alleen dat als die storm van 1859 nu herhaald zou worden, de schade zo groot zou zijn, dat de beschaving zoals we die kennen voorlopig even afgelopen is. We weten dat die stormen mogelijk zijn, dus het is een kwestie van wachten tot het weer gebeurt.

Tijdens een zonne-maximum is de kans het grootst, maar je zult net zien dat tijdens een maximum alle CME's de aarde missen, en dat we tijdens een zonne-minimum een voltreffer krijgen (Murphy's law). Vergelijk het met "the big one" (aardbeving in Californie); iedereen weet dat 'ie er aan zit te komen, maar pas achteraf weet je waar en wanneer het precies is geworden. Maar omdat de impact zo groot kan zijn, kan de mensheid zich er maar beter op voorbereiden.

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POSSIBLE EARTH-DIRECTED ERUPTION:

A magnetic filament in the sun's northeastern quadrant erupted during the late hours of Nov. 30th. Click on the image to play a movie recorded by NASA's Solar Dynamics Observatory--and pay attention to the bright splash below the movie arrow:

The blast produced a B-class solar flare and hurled a bright coronal mass ejection (CME) into space. Preliminary coronagraph images from NASA's twin STEREO spacecraft suggest that the cloud might be heading toward Earth. Further analysis is required, however, to confirm that the CME is coming our way. Stay tuned for updates.

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NOAA forecasters estimate a 30% chance of geomagnetic activity on Dec. 3rd when the CME is expected to deliver a glancing blow to Earth's magnetic field. High-latitude sky watchers should be alert for auroras.

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EPIC BLAST: As predicted, the a "mega-filament" of solar magnetism erupted on Dec. 6th, producing a blast of epic proportions. NASA's Solar Dynamics Observatory recorded the action as the 700,000-km long structure lifted off the stellar surface and--snap!!--hurled itself into space.

The eruption produced a bright coronal mass ejection (CME) observed by the STEREO-A spacecraft: video. Earth was not in the line of fire; the cloud should sail wide of our planet. Earth-effects might be limited to pretty pictures.

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The strange case of solar flares and radioactive elements
When researchers found an unusual linkage between solar flares and the inner life of radioactive elements on Earth, it touched off a scientific detective investigation that could end up protecting the lives of space-walking astronauts and maybe rewriting some of the assumptions of physics.

L.A. Cicero

Peter Sturrock, professor emeritus of applied physics
BY DAN STOBER

It's a mystery that presented itself unexpectedly: The radioactive decay of some elements sitting quietly in laboratories on Earth seemed to be influenced by activities inside the sun, 93 million miles away.

Is this possible?

Researchers from Stanford and Purdue University believe it is. But their explanation of how it happens opens the door to yet another mystery.

There is even an outside chance that this unexpected effect is brought about by a previously unknown particle emitted by the sun. "That would be truly remarkable," said Peter Sturrock, Stanford professor emeritus of applied physics and an expert on the inner workings of the sun.

The story begins, in a sense, in classrooms around the world, where students are taught that the rate of decay of a specific radioactive material is a constant. This concept is relied upon, for example, when anthropologists use carbon-14 to date ancient artifacts and when doctors determine the proper dose of radioactivity to treat a cancer patient.

Random numbers

But that assumption was challenged in an unexpected way by a group of researchers from Purdue University who at the time were more interested in random numbers than nuclear decay. (Scientists use long strings of random numbers for a variety of calculations, but they are difficult to produce, since the process used to produce the numbers has an influence on the outcome.)

Ephraim Fischbach, a physics professor at Purdue, was looking into the rate of radioactive decay of several isotopes as a possible source of random numbers generated without any human input. (A lump of radioactive cesium-137, for example, may decay at a steady rate overall, but individual atoms within the lump will decay in an unpredictable, random pattern. Thus the timing of the random ticks of a Geiger counter placed near the cesium might be used to generate random numbers.)

As the researchers pored through published data on specific isotopes, they found disagreement in the measured decay rates odd for supposed physical constants.

Checking data collected at Brookhaven National Laboratory on Long Island and the Federal Physical and Technical Institute in Germany, they came across something even more surprising: long-term observation of the decay rate of silicon-32 and radium-226 seemed to show a small seasonal variation. The decay rate was ever so slightly faster in winter than in summer.

Was this fluctuation real, or was it merely a glitch in the equipment used to measure the decay, induced by the change of seasons, with the accompanying changes in temperature and humidity?

"Everyone thought it must be due to experimental mistakes, because we're all brought up to believe that decay rates are constant," Sturrock said.

The sun speaks

On Dec 13, 2006, the sun itself provided a crucial clue, when a solar flare sent a stream of particles and radiation toward Earth. Purdue nuclear engineer Jere Jenkins, while measuring the decay rate of manganese-54, a short-lived isotope used in medical diagnostics, noticed that the rate dropped slightly during the flare, a decrease that started about a day and a half before the flare.

If this apparent relationship between flares and decay rates proves true, it could lead to a method of predicting solar flares prior to their occurrence, which could help prevent damage to satellites and electric grids, as well as save the lives of astronauts in space.

The decay-rate aberrations that Jenkins noticed occurred during the middle of the night in Indiana meaning that something produced by the sun had traveled all the way through the Earth to reach Jenkins' detectors. What could the flare send forth that could have such an effect?

Jenkins and Fischbach guessed that the culprits in this bit of decay-rate mischief were probably solar neutrinos, the almost weightless particles famous for flying at almost the speed of light through the physical world humans, rocks, oceans or planets with virtually no interaction with anything.

Then, in a series of papers published in Astroparticle Physics, Nuclear Instruments and Methods in Physics Research and Space Science Reviews, Jenkins, Fischbach and their colleagues showed that the observed variations in decay rates were highly unlikely to have come from environmental influences on the detection systems.

Reason for suspicion

Their findings strengthened the argument that the strange swings in decay rates were caused by neutrinos from the sun. The swings seemed to be in synch with the Earth's elliptical orbit, with the decay rates oscillating as the Earth came closer to the sun (where it would be exposed to more neutrinos) and then moving away.

So there was good reason to suspect the sun, but could it be proved?

Enter Peter Sturrock, Stanford professor emeritus of applied physics and an expert on the inner workings of the sun. While on a visit to the National Solar Observatory in Arizona, Sturrock was handed copies of the scientific journal articles written by the Purdue researchers.

Sturrock knew from long experience that the intensity of the barrage of neutrinos the sun continuously sends racing toward Earth varies on a regular basis as the sun itself revolves and shows a different face, like a slower version of the revolving light on a police car. His advice to Purdue: Look for evidence that the changes in radioactive decay on Earth vary with the rotation of the sun. "That's what I suggested. And that's what we have done."

A surprise

Going back to take another look at the decay data from the Brookhaven lab, the researchers found a recurring pattern of 33 days. It was a bit of a surprise, given that most solar observations show a pattern of about 28 days the rotation rate of the surface of the sun.

The explanation? The core of the sun where nuclear reactions produce neutrinos apparently spins more slowly than the surface we see. "It may seem counter-intuitive, but it looks as if the core rotates more slowly than the rest of the sun," Sturrock said.

All of the evidence points toward a conclusion that the sun is "communicating" with radioactive isotopes on Earth, said Fischbach.

But there's one rather large question left unanswered. No one knows how neutrinos could interact with radioactive materials to change their rate of decay.

"It doesn't make sense according to conventional ideas," Fischbach said. Jenkins whimsically added, "What we're suggesting is that something that doesn't really interact with anything is changing something that can't be changed."

"It's an effect that no one yet understands," agreed Sturrock. "Theorists are starting to say, 'What's going on?' But that's what the evidence points to. It's a challenge for the physicists and a challenge for the solar people too."

If the mystery particle is not a neutrino, "It would have to be something we don't know about, an unknown particle that is also emitted by the sun and has this effect, and that would be even more remarkable," Sturrock said.

Chantal Jolagh, a science-writing intern at the Stanford News Service, contributed to this story.

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NASA revises the sunspot prediction down again

Current prediction for the next sunspot cycle maximum gives a smoothed sunspot number maximum of about 58 in July of 2013. We are currently two years into Cycle 24 and the predicted size continues to fall.

Additionally, the monthly data plots are out, and there’s been little change from last month in the three major solar indexes plotted by the Space Weather Prediction Center:

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Op donderdag 10 februari 2011 16:19 schreef -CRASH- het volgende:
3 van de 5 koudere winters was toch voor de VS bestemd !!!

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Op donderdag 10 februari 2011 16:30 schreef Frutsel het volgende:

[..]

wij zijn een puppet van de VS

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Op zondag 13 februari 2011 20:16 schreef zenkelly het volgende:
BEHEMOTH SUNSPOT 1158: Sunspot 1158 is growing rapidly (48 hour movie) and crackling with C-class solar flares. The active region is now more than 100,000 km wide with at least a dozen Earth-sized dark cores scattered beneath its unstable magnetic canopy. Earth-directed eruptions are likely in the hours ahead.

www.spaceweather.com

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Op dinsdag 15 februari 2011 19:05 schreef Frutsel het volgende:

SOLAR FLARE X2 CLASS MOST POWERFUL CMA IN FOUR YEARS IT WILL HIT EARTH IN 48HRS FEB 15 2011.mov

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It might cause some geometric storms erm... geomagnetic storms