tagged w/ Sun
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A study that correlated exposure to sunlight with cancer risk found that people exposed to more sunlight had a significantly lower risk of many types of cancer (Lin, 2012). This study followed more than 450,000 white, non-Hispanic subjects aged 50-71 years from diverse geographic areas in the US. Researchers correlated the calculated ultraviolet radiation (UVR) exposure in these different areas with the incidence of a variety of cancers. The diverse sites included six states (California, Florida, Louisiana, New Jersey, Pennsylvania, and North Carolina), and the metropolitan areas of Atlanta and Detroit. They followed these subjects over a period of nine years in the study and eliminated other known risk factors for cancer such as smoking, body mass index, and physical activity. This was the first prospective study (participants were actively observed for the duration of the study) to look at the relationship of sunlight to cancer.
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Learn more: http://www.naturalnews.com/035855_sun_exposure_cancer_risk.html#ixzz1uls8K2ZBA study that correlated exposure to sunlight with cancer risk found that people... more
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Novek
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17 days ago
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8 x World Memory Champion, Dominic O'Brien guides you through the 'journey method' memory technique. Watch the video, remember the items and then play the memory challenge game.
http://www.youtube.com/watch?v=d0Pr9ftc8cw8 x World Memory Champion, Dominic O'Brien guides you through the 'journey... more
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Philadelphia Inquirer...
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Monday, March 19, 2012
Evolution Under a Temperamental Sun
By Faye Flam
INQUIRER STAFF WRITER
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You didn’t need to be a solar physicist to be riveted by the “solar storm” that sent a blast of charged particles our way this month. That particular flare-up fizzled, but in the long term, the sun’s temper is worthy of our attention.
Our sun changes, and living things adapt or die.
Our planet circled a very different star when life first emerged on Earth some four billion years ago. The sun was dimmer and cooler, but more violent, sending deadly blasts of X-rays as well as particles that would have lit up the skies with spectacular auroras.
The displays would have been visible worldwide, but probably had no spectators, since life needed to stay deep underwater or buried inside minerals to survive until the sun calmed down.
For most of human history no one realized that the sun was fickle, breaking out in spots, flares, and eruptions, and would eventually kill all life on our planet.
“It was a huge part of Western culture that the heavens were forever and unchanging,” said University of Michigan astronomer Fred Adams, who has written books on the beginning of the universe and the end.
Galileo was the first to see spots on the sun, which did not ingratiate him with the church. Even Einstein was influenced by the cultural bias toward unchanging heavens, Adams said, altering his theory of general relativity to work in a static universe. Soon after he published his theory, Edwin Hubble showed the universe was in fact expanding.
It wasn’t until the mid-20th century that people realized the sun was running on nuclear fusion, and that when its fuel started to run low, the sun would die a violent death, blowing up into an enormous red giant.
For those concerned that the Mayans have forecast the end of the world this year, the astronomers’ threat of more solar storms may seem even more ominous.
It’s true we’re moving into a stormy season that should last into 2013, but this happens every 11 years, said Douglas Duncan, an astronomer at the University of Colorado and director of the Fiske Planetarium. Astronomers still don’t know why solar storms come in cycles or why it takes 11 years, he said. Duncan has catalogued similar cycles on other stars, and learned that sunspots and solar storms come in cycles all over the galaxy.
The cycles vary in length depending on a star’s age — the cycles lengthening as stars get older.
During the peaks, or solar maxima, the spots on the sun increase, and the sun bursts with flares and storms. The sun always sends us a solar wind of protons and electrons, but during a solar storm, these shoot out in gusts. When the particles reach Earth, they light up molecules in our atmosphere as if it were a giant fluorescent bulb.
The effects on Earth are more dramatic if the gusts are released on a direct path to Earth, as scientists thought happened earlier this month. That would be unlikely to affect human health directly, but it could have disabled satellites, particularly ones that channel GPS signals.
When Duncan was comparing sunspot cycles on different stars, he said he got a call from Carl Sagan wanting to know how solar activity might influence the course of life on Earth. That, Duncan said, would take an expert on our planet’s early history.
We humans couldn’t have tolerated the ultraviolet radiation and X-rays that pummeled our planet during life’s early history. About three billion to four billion years ago, the UV intensity was between 8 and 20 times what we have now, said geochemist Stephen Mojzsis of the Université Claude Bernard in Lyon, France. So for several billion years, life survived protected by water. As the sun cooled down and oxygen began to rise with the advent of blue-green algae, he said, life expanded to fill up the land as soon as it became habitable.
The sun was also cooler and was red rather than yellow, and we may carry an evolutionary fossil of that time in our eyes, he said. On the early Earth, microbes that were just starting to use photosynthesis began manufacturing a pigment called rhodopsin, which is good for absorbing red light. As the sun became yellow, the ability to make rhodopsin persisted, though different organisms used it for other purposes.
We use it in our retinas for night vision.
The sun was also 30 percent dimmer in the distant past, said Mojzsis. If it dimmed that much now, the Earth would freeze solid, but on the early Earth, different configurations of land masses and a different atmospheric chemistry kept the oceans liquid under such a cool sun.
The sun is getting hotter because it’s fusing hydrogen into the heavier element helium. That’s causing the sun to get denser and the nuclear fusion that powers it to become more efficient.
Scientists estimate that in 500 million to 1.5 billion years, the sun will be hot enough to wipe out all life on Earth. Moving to Mars would only postpone the apocalypse.
Our neighbor, Alpha Centauri, shines in a brighter, more bluish light because it’s older and hotter than our sun. If it had any habitable planets, they are now burnt to a crisp, said Mojzsis.
In an additional five billion years, the sun will start to run out of fuel, and before it dies, it will expel its outer layers, becoming a red giant. Astronomers used to assume that the sun would swallow our planet, said Duncan, but more recent calculations show it will expand to just about the size of Earth’s orbit. Either way, it will broil us.
As for those pessimists who worry about the Mayan predictions, Duncan said he’s looked into the matter and the ancient civilization didn’t really predict the world would end this year. Mayans did create an advanced calendar that was so good they extended it many centuries into the future. It just happened to end with 2012.
.Philadelphia Inquirer...
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Monday, March 19, 2012
Evolution Under a... more
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Magnetism is one reason current sun storm has been relatively harmless.
Given the sheer power of this week's solar flares—and NASA's warning of a potentially severe geomagnetic storm, with potential disruptions of power grids, GPS, and communications—the sun storm striking us Thursday has been surprisingly soft.
And for good reason, solar physicist Alex Young explains.
(click on the link for the explanation)Magnetism is one reason current sun storm has been relatively harmless.
Given the... more
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Between 7 and 8 p.m.Tuesday night, the sun spit out a large, X5-class solar flare. NOAA’s Space Weather Prediction Center called it “one of the largest solar flares of the current solar cycle.”
X class flares are the strongest category of solar flares. According to NASA, they can trigger planet-wide radio blackouts and long-lasting radiation storms.
These flares are often complemented by phenomena known as coronal mass ejections (CME) which are essentially bursts of solar wind. If a CME is directed toward the Earth, a geomagnetic storm results that can interfere with the Earth’s magnetosphere.
NOAA said predictions for this particular flare/CME event “are still being refined.”
SpaceWeather.com wouldn’t draw any conclusions about where the CME might go.
“First-look data from STEREO-B are not sufficient to determine if the cloud is heading for Earth,” it said.
Its “best guess” was that CME probably won’t directly head for Earth, but rather produce a “glancing blow” on March 8 or 9.
A significant solar storm can disrupt satellites, communications systems, and, in some cases, ground-based technologies and power grids. These storms also are conducive to auroras, especially at high latitudes. We will keep you posted on the predictions for this event as they are fine tuned and it draws closer.
By Jason Samenow | Posted at 11:49 PM ET, 03/06/2012Between 7 and 8 p.m.Tuesday night, the sun spit out a large, X5-class solar flare.... more
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For a 30 hour spell (Feb 7-8, 2012) the Solar Dynamics Observatory captured plasma caught in a magnetic dance across the Sun's surface. The results closely resemble extreme tornadic activity on Earth.For a 30 hour spell (Feb 7-8, 2012) the Solar Dynamics Observatory captured plasma... more
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The expected reduction in the Sun's activity will not have a big impact on global temperatures, Met Office research showsA reduction in the Sun's activity is expected this century, but is unlikely to do much to slow global warming due to greenhouse gases, scientists said on Monday.
link:http://www.guardian.co.uk/environment/2012/jan/24/sun-changes-global-warmingThe expected reduction in the Sun's activity will not have a big impact on global... more
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A powerful solar eruption is expected to blast a stream of charged particles past Earth on Tuesday, as the strongest radiation storm since 2005 rages on the sun.
NASA's Solar Dynamics Observatory caught an extreme ultraviolet flash from a huge eruption on the sun overnight (10:59 p.m. ET Sunday, or 0359 GMT Monday), according to SpaceWeather.com.
The solar flare spewed from sunspot 1402, a region of the sun that has become increasingly active lately. Several NASA satellites, including the Solar Dynamics Observatory, the Solar Heliospheric Observatory and the STEREO spacecraft, observed the massive sun storm.
A barrage of charged particles triggered by the outburst is expected to hit Earth at around 9 a.m. ET Tuesday, according to experts at the Space Weather Prediction Center, a division of the National Oceanic and Atmospheric Administration. [Video and photos of the solar flare]
NOAA's forecasters say this is the strongest solar radiation storm since May 2005. As a precaution, polar flights on Earth are expected to be rerouted, the agency's deputy administrator, Kathy Sullivan, said Monday at the 92nd annual American Meteorological Society meeting in New Orleans.
Scientists call these electromagnetic bursts "coronal mass ejections," and they are closely studied because they can produce potentially harmful geomagnetic storms when electrically charged particles from the sun interact with Earth's magnetic field.
In addition to generating stronger than normal displays of Earth's auroras (also known as the northern and southern lights), geomagnetic storms aimed directly at our planet can also disrupt satellites in orbit, cause widespread communications interference and damage other electronic infrastructures.
"There is little doubt that the cloud is heading in the general direction of Earth," SpaceWeather.com said in an alert. "A preliminary inspection of SOHO/STEREO imagery suggests that the CME will deliver a strong glancing blow to Earth's magnetic field on Jan. 24-25 as it sails mostly north of our planet."
unday's solar flare was rated an M9-class eruption, which placed it just on the verge of being an X-class flare, the most powerful type of solar storm. M-class sun storms are powerful but midrange, while C-class flares are weaker.
Last week, a separate sunspot group unleashed several M-class flares. SDO scientists said these types of flares are occurring almost daily as the sun's rotation slowly turns the region toward Earth.
The sun's activity waxes and wanes on an 11-year cycle. Currently, our planet's nearest star is in the midst of Solar Cycle 24, and activity is expected to ramp up toward solar maximum in 2013.A powerful solar eruption is expected to blast a stream of charged particles past... more
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Have you seen the sun lately? No, no, don't look right at it with your eyes. Ouch. I'm not asking about the weather, either, or at least Earth's weather. The sun itself is a sight to behold right now, and it is creating some fascinating space weather as well.
link:http://news.discovery.com/space/have-you-really-seen-the-sun-110928.htmlHave you seen the sun lately? No, no, don't look right at it with your eyes.... more
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A planet orbiting two suns - the first confirmed alien world of its kind - has been found by Nasa's Kepler telescope, the US space agency announced.
It may resemble the planet Tatooine from the film Star Wars, but scientists say Luke Skywalker, or anyone at all, is unlikely to be living there.
Named Kepler-16b, it is thought to be an uninhabitable cold gas giant, like Saturn.
The newly detected body lies some 200 light years from Earth.
Though there have been hints in the past that planets circling double stars might exist, scientists say this is the first confirmation.
'Stunning'
It means when the day ends on Kepler-16b, there is a double sunset, they say.
Kepler-16b's two suns are smaller than ours - at 69% and 20% of the mass of our sun - making the surface temperature an estimated -100 to -150F (-73 to -101C).
The planet orbits its two suns every 229 days at a distance of 65m miles (104m km) - about the same solar orbit as Venus.
The Kepler telescope, launched in 2009, is designed to scour our section of the Milky Way galaxy for Earth-like planets.
"This is really a stunning measurement by Kepler," said Alan Boss of the Carnegie Institution for Science, a co-author of the study.
"The real exciting thing is there's a planet sitting out there orbiting around these two stars."
Kepler finds stars whose light is regularly dimmed, which means there is an orbited planet between the star and the telescope.
Nasa's scientists saw additional dips in the light in both stars at alternating but regular times, confirming the dual orbit of the planet.
The finding was reported in Friday's issue of the journal Science.A planet orbiting two suns - the first confirmed alien world of its kind - has been... more
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pdy
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9 months ago
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Dark mode plasma phenomena exist on the Sun.
The image at the top of the page is the most detailed ever taken of the Sun's chromosphere. The smallest features are 130 kilometers in size. Each spicule is about 480 kilometers in diameter, with a length of 3200 kilometers. The largest measure as much as 8000 kilometers long. Although the light and dark regions are colorful, the colors were added in processing.
In the electric Sun hypothesis, the Sun is a glowing anode, or positively charged "electrode." The cathode is an invisible "virtual cathode," called the heliosphere. The heliosphere is at the farthest limit of the Sun's coronal discharge, billions of kilometers from its surface, where a "double layer" isolates the Sun's plasma cell from the galactic plasma that surrounds it. Galactic plasma is otherwise called the Interstellar Medium (ISM).
Electric forces occurring within the double charge layer above the Sun’s surface are responsible for the incredibly active plasma phenomena that we see. Since Electric Universe theory assumes that celestial bodies interact through conductive plasma and are connected by circuits, the Sun is also assumed to be electrically connected with the galaxy. The Sun can be thought of as an electrically charged object seeking equilibrium with its environment. However, it is not stable. The charges flowing into and out of the Sun can sometimes increase to the point where it releases plasma discharges called solar flares.
Conventional scientists see solar flares, or coronal mass ejections (CME), taking place when magnetic loops "reconnect" with each other, causing a short circuit. The so-called "magnetic energy" is said to accelerate gases into space. Although "magnetic reconnection" is a poorly constructed theory, it is the only explanation offered by heliophysicists.
The "solar wind" is a dark mode emission radiating from the Sun at approximately 700 kilometers per second. In a Universe governed by gravity, the Sun's heat and radiation pressure cannot explain how the charged particles that make up the solar wind accelerate past Venus, Earth and the rest of the planets. Prior to the discovery, no one expected such acceleration.
In an Electric Universe, there is an obvious explanation: electric fields in space. Since coherent charges flow through the Solar System, then it seems reasonable to conclude that the dark mode solar plasma is affected by the electrodynamic fields of the Sun and its planetary family.
Solar flares could be tremendous lightning bursts in that case, pushing plasma to near relativistic speeds. If the circuit that connects the Sun with the Milky Way extends for hundreds of thousands of light-years, massive amounts of electrical energy might be contained in such magnetically confined “transmission lines” feeding the solar anode.
According to the Electric Sun theory, flares, the hot corona, and all other solar phenomena result from changes in the electrical input from our galaxy. Birkeland current filaments slowly rotate past the Solar System, supplying more or less power to the Sun as they go. Arc mode, glow mode, and dark mode discharges are all influenced by those flowing currents of electric charge.
Stephen SmithDark mode plasma phenomena exist on the Sun.
The image at the top of the page is... more
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WARNING: You will get teary-eyed. They freaking hugged!
It's good news all round then in Germany, where a group of lab chimps were allowed outdoors for the very first time. As you can see from the video, they're rather pleased.
These poor creatures are seeing sunlight for the first time ever in their lives. Look at them hug with joy and smile with sheer happiness. So sad and so happy.WARNING: You will get teary-eyed. They freaking hugged!
It's good news all... more
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Results from an experiment built to study how clouds form suggests that our knowledge of this subject may need to be revised, Nature journal reports.
Tiny particles (aerosols) form the basis of the "seeds" from which clouds grow.
The aim of the study is to create a better understanding of how clouds form and in particular the role of cosmic rays. Dr Kirkby said that the work will lead to better computer models of how the Earth's climate is influenced by clouds.
more at link...
This is old news. Dr. Henrik Svensmark has already broke it down in his free documentary, The Cloud Mystery + the website www.thecloudmystery.com. I posted it over a year ago and only has 64 views, but I'll post it again in the comments below. The eco-commie propagandists on this site are chumps. They're not scientific or intellectual and now the BBC has to admit that they know nothing about the climate and how the Sun, cosmic rays and clouds affect it.
The most pathetic thing about the article is the article link on the right column entitled, "'No Sun Link' to Climate Change" as if the Sun doesn't affect climate or temperature. Are you f*cking kidding me?Results from an experiment built to study how clouds form suggests that our knowledge... more
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Iran and Syria have enjoyed a close strategic alliance for decades, founded on their mutual antipathy towards the West. In return for Iranian military support, Syria has supported Tehran's attempts to develop the Islamic fundamentalist Hizbollah militia into a major political force in neighbouring Lebanon.Iran and Syria have enjoyed a close strategic alliance for decades, founded on their... more
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Washington DC -- Pres. Barack Obama says he has figured out what is causing the US economic slowdown, and that he knows how to cure the economy's ills. But a variety of experts disagree.
"Wall Street is not getting its minimum daily requirement of vitamin D," Obama told a packed press conference conducted earlier today outside the Oval Office. "How else would you explain the market's crazy roller coaster ride?"Washington DC -- Pres. Barack Obama says he has figured out what is causing the US... more
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An extremely powerful solar flare, the largest in over four years, rocked the sun early Tuesday (Aug. 9), but is unlikely to wreak any serious havoc here on Earth, scientists say.
"It was a big flare," said Joe Kunches, a space scientist with the National Oceanic and Atmospheric Administration (NOAA)'s Space Weather Prediction Center. "We lucked out because the site of the eruption at the sun was not facing the Earth, so we will probably feel no ill effects."
Today's solar flare began at 3:48 a.m. EDT (0748 GMT), and was rated a class X6.9 on the three-class scale scientists use to measure the strength of solar flares. The strongest type of solar eruption is class X, while class C represents the weakest and class M flares are medium-strength events.
The flare is the largest one yet in the sun's current cycle, which began in 2008 and is expected to last until around 2020. Solar activity waxes and wanes over an 11-year sun weather cycle, with the star currently heading toward a solar maximum in 2013.
"This flare had a GOES X-ray magnitude of X6.9, meaning it was more than 3 times larger than the previous largest flare of this solar cycle - the X2.2 that occurred on Feb 15, 2011," scientists with NASA's Solar Dynamics Observatory, a space observatory that monitors the sun, wrote in an update.
Before the Feb. 15 storm, the largest recent solar flare occurred in December 2006, when an X9-class solar storm erupted from the sun.
more at link...
Don't worry, Al Gore says that the Sun is "bullshit" and doesn't affect Earth's climate.An extremely powerful solar flare, the largest in over four years, rocked the sun... more
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Photovoltaic cells that convert heat, not sunlight, to electricity may turn out to be the solution for capturing all the energy we waste through heat.
Photovoltaic cells are best known for turning sunlight into electrical power--and they're big business. But did you know that there's a type of PV cell that eats heat instead of light to make power? It could replace the Li-ion battery in your cell phone, and it may also be used to scavenge waste heat from almost anything that normally dumps it into the environment, from your TV's electronics to your car's engine (even an electrical one).
Thermal PV tech has been around ages, and works the same way as the solar variation: Incoming radiation excites the atoms in its semiconductor structure, which then push electrons out--generating current. And much as is the case for solar PV cells, the advances in the tech have all been about improving their efficiency. Scientists at MIT have recently honed this tech, pushing the efficiency up so far that thermal PV cells are now a viable alternative to all sorts of other tech. MIT's breakthrough was to add a layer of tungsten to the front of a PV cell, with a surface that's been etched on a nanoscopic scale so that when heated it emits infrared light (heat) at wavelengths precisely tuned to the best efficiency of the PV cell behind it.
Right now, MIT is building the tech into tiny silicon micro-reactors. These are tiny furnaces that burn butane to generate heat, and then extract the heat to produce electricity. If that sounds convoluted, then this will impress you: The microreactors are small enough to replace the button cell Li-ion batteries you find in devices like watches, and convert the chemical ingredients that make them tick with three times better efficiency than Li-ion can match. Better yet, when they run out of fuel you simply snap in an extra cartridge of butane to recharge them.
But because MIT's system is so very efficient, and is based on a material that's not too rare or expensive, it could be used to build fuel-less heat-scavenging units that are stuck inside all sorts of devices to recover the wasted heat energy that nearly every machine we've ever made kicks out (thanks to the lovely laws of physics). How about the hot back of your TV? Or the hot chassis of the electric motor in your Nissan Leaf? Let's get fanciful and imagine it would be possible to claw back a few milliwatts of energy from the hot shower water you simply let run down the drain.
More at the linkPhotovoltaic cells that convert heat, not sunlight, to electricity may turn out to be... more
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Get ready for the next big bombshell in the man-made warming debate. The world’s most sophisticated particle study laboratory—CERN in Geneva—will soon announce that more cosmic rays do, indeed, create more clouds in earth’s atmosphere. More cosmic rays mean a cooler planet. Thus, the solar source of the earth’s long, moderate 1,500-year climate cycle will finally be explained.
Cosmic rays and solar winds are interesting phenomena—but they are vastly more relevant when an undocumented theory is threatening to quadruple society’s energy costs. The IPCC wants $10 gasoline, and “soaring” electric bills to reduce earth’s temperatures by an amount too tiny to measure with most thermometers.
In 2007, when Fred Singer and I published Unstoppable Global Warming Every 1,500 Years, we weren’t terribly concerned with cosmic rays. We knew the natural, moderate warming/cooling cycle was real, from the evidence in ice cores, seabed sediments, fossil pollen and cave stalagmites. The cycle was the big factor that belied the man-made warming hysteria of the Intergovernmental Panel on Climate Change.
When Willi Dansgaard and Hans Oeschger discovered the 1,500 year cycle in the Greenland ice cores in 1984, they knew immediately that it was solar-powered. They’d seen exactly the same cycle in the carbon 14 molecules in trees, and in the beryllium 10 molecules in ice cores. Both sets of molecules are formed when cosmic rays strike our atmosphere. The cycle had produced a whole series of dramatic, abrupt Medieval-Warming-to-Little-Ice-Age climate changes.
The IPCC, for its part, announced that the sun could not be the forcing factor in any major climate change because the solar irradiation was too small. IPCC did not, however, add up the other solar variations that could amplify the solar irradiation. Nor had the IPCC programmed its famed computer models with the knowledge of the Medieval Warming (950–1200 AD), the Roman Warming (200 BC–600 AD), or the big Holocene Warmings centered on 6,000 and 8,000 BC.
The IPCC apparently wanted to dismiss the sun as a climate factor—to leave room for a CO2 factor that has only a 22 percent correlation with our past thermometer record. Correlation is not causation—but the lack of CO2 correlation is deadly to the IPCC theory.
Henrik Svensmark of the Danish Space Research Institute added the next chapter in the climate cycle story, just before our book was published. His cloud chamber experiment showed natural cosmic rays quickly created vast numbers of tiny “cloud seeds” when our mix of atmospheric gases was bombarded with ultra-violet light. Since clouds often cover 30 percent of the earth’s surface, a moderate change in cloud cover clearly could explain the warming/cooling cycle.
Svensmark noted the gigantic “solar wind” that expands when the sun is active—and thus blocks many of the cosmic rays that would otherwise hit the earth’s atmosphere. When the sun weakens, the solar wind shrinks. Recently, the U.S. Solar Observatory reported a very long period of “quiet sun” and predicted 30 years of cooling.
Last year, Denmark’s University of Aarhus did another experiment with a particle accelerator that fully confirmed the Svensmark hypothesis: cosmic rays help to make more clouds and thus could cool the earth.
The CERN experiment is supposed to be the big test of the Svensmark theory. It’s a tipoff, then, that CERN’s boss, Rolf-Dieter Heuer, has just told the German magazine Die Welt that he has forbidden his researchers to “interpret” the forthcoming test results. In other words, the CERN report will be a stark “just the facts” listing of the findings. Those findings must support Svensmark, or Heuer would never have issued such a stifling order on a major experiment.
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Henrik Svensmark did the documentary, The Cloud Mystery, I watched it to actually do research on climate change and learn about science. It debunks AGW Global Warming, just like Galileo debunked the geocentric. I never knew how hard it was to convince people that the Sun actually affected temperatures on Earth!Get ready for the next big bombshell in the man-made warming debate. The world’s... more
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The death of a comet that plunged into the sun was
captured on camera this month for the first time
in history, scientists say.
The comet met its fiery demise on July 6 when it zoomed
in from behind the sun and melted into oblivion as it crashed
into the star. It was NASA's Solar Dynamics Observatory (SDO),
a satellite orbiting Earth that studies the sun, which witnessed
the comet's death-blow.
One of the SDO spacecraft's high-definition imagers
"actually spotted a sun-grazing comet as it disintegrated over
about a 15 minute period (July 6, 2011), something never observed
before," SDO officials said. [See the observatory's image of the
comet death]
kb http://www.nasa.govThe death of a comet that plunged into the sun was
captured on camera this month for... more
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