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Originally posted by squiz
By all means do it, lets hear it, it's time the gloves come off on this issue.
Originally posted by ngchunter
When you can show me how electric universe theory accounts for the stardust mission result without invoking a conspiracy then I'll be receptive. That's all I'll say so as not to derail things.
Source-Astronomy today.
When it doubt, go back to the basics. That's just what cosmologists have done to explain why our universe seems to be accelerating. The new buzz word in cosmology these days is 'quintessence', borrowed from the ancient Greeks who used the term to describe a mysterious 'fifth element'...
Originally posted by ngchunter
If EU theory was right then stardust shouldn't have recovered any minerals at all (in fact, the probe should have been fried). Not surprisingly, some will try to twist EU to fit ANY result, but the fact of the matter is that if EU's original ideas of comets was correct, they shouldn't have recovered dust or bits of comet from the tail.
The fact of the matter is that just as many electrons flow from the sun as do protons, a fact that EU proponents consistently fail to mention.
The sun is NOT electrically powered. Stardust proved that once and for all by showing that cometary tails are composed of dust, not plasma.
Onboard the ACE satellite is the Solar Wind Electron Proton Alpha Monitor (SWEPAM) which is designed for direct scrutiny of coronal mass ejections (CME), interplanetary shockwaves and the detailed solar wind structure. Using advanced three-dimensional interpretive instrumentation, SWEPAM will coordinate its observations with the Ulysses probe, currently in polar orbit about the Sun at approximately 673,191,000 kilometers distance.One of the more unusual discoveries by the ACE/SWEPAM mission is an electron depletion in the solar wind due to “backstreaming electrons” flowing into the Sun from the surrounding space. These electrons are not in sync with the newest theories of the Sun’s activity, since the conveyance of electric charge is not considered apropos by astrophysicists. Consequently, they are left with a mystery when electrical activity presents itself in ways that they do not expect.
Originally posted by RuneSpider
news.bbc.co.uk...
If this experiment goes through as expected, it's results would lean heavily towards the standard model.
Originally posted by squiz
I don't know where you get your information but that is completely wrong.
The dust is a central part of the theory. Did you read the links, the statements and the results?
it also explains the craters and poc marked surfaces.
Originally posted by ngchunter
It's easy to change horses after someone actually puts the "plasma tail" theory to the test. I'm not impressed at all.
it also explains the craters and poc marked surfaces.
Oh right, because regular craters are nothing like that...
The facts are apt to be more stubborn than the theoreticians: Deep Impact kicked up ten times more dust than expected and stimulated the comet's activity a magnitude less than expected. The dust was not a conglomeration of sizes as expected but was consistently powder-fine. The nucleus of the comet was covered with sharply delineated features, two of which were circular enough to be called impact craters. This was not expected for a dirty snowball or a snowy dirtball or even a powdery fluffball.
The craters, of course, weren’t actually called impact craters. They must have been caused by subsurface explosions, because they had flat floors and terraced walls, despite the myriad of other craters on rocky planets and moons with flat floors and terraced walls that are called impact craters. All the other circular depressions with flat floors and terraced walls weren’t craters because they had “unusual shapes”.
Originally posted by squiz
THERE WAS NOTHING THAT WAS EXPECTED BY THE STANDARD MODEL,
Are you saying comets do not have a plasma tail?
Actually craters are also the result of discharge machining, shall we talk craters? And why and how should comets even have craters if they are dirty snowballs?
Originally posted by ngchunter
When EU first started proposing the plasma tail instead of a dust tail hypothesis, there was no reason to believe it should contain dust as the whole point was to dispute the reason for the appearance of the tail being plasma, not reflected gas and dust. To EU'ers, there was no dust tail, just plasma. The truth is there is a dust AND an ion tail, but this is not what EU'ers originally predicted. The backtracking in recent years is hilarious to watch though. The fact of the matter is that spectroscopic analysis PROVES that cometary dust tails are just that; dust and water.
Comets hit debris in space just the way asteroids do. There's no reason to think they wouldn't be cratered according to the standard model.
If the craters are the result of discharges, where's all the heat? Comets are very cold things as proven by spectroscopic analysis:
adsabs.harvard.edu...
So much for that "electric comet" - if that's the reason high temperature minerals were detected, we should still be seeing high temperatures. We don't.
“How did materials formed by fire end up on the outermost reaches of the solar system, where temperatures are the coldest?” asked Associated Press writer Pam Easton.
"That's a big surprise. People thought comets would just be cold stuff that formed out ... where things are very cold," said NASA curator Michael Zolensky. "It was kind of a shock to not just find one but several of these, which implies they are pretty common in the comet".
Cometary Filaments
The Spitzer Space Telescope has returned remarkable images of Comet Holmes 17P, revealing structures that appear to confirm the electrical nature of comets.
An October 2007 Picture of the Day described the behavior of Holmes 17P and noted that many of the observed phenomena could be explained by an electrical theory of comets. Since these pages were first published, Electric Universe theorists have challenged the prevailing "dusty snowball" cometary theory. Comets becoming active at long distances from the Sun—sometimes as far out as Neptune's orbit—contradict the idea of a frozen ball of ice that only grows a tail or emits jets of gas when it gets close enough for the Sun's heat to sublimate its surface.
Hale-Bopp, a naked-eye comet that hung for weeks like an exclamation mark in the 1997 sky, was still active four years after it left the inner solar system. When it was farther from the Sun than the orbit of Uranus it was almost two million kilometers in diameter. It displayed a coma, a dust tail, and an ion tail more than a million kilometers long. Solar radiation will not melt ice at that distance, otherwise the moons of Saturn and Jupiter would be bone dry, so astronomers were unable to explain it.
In August of 2007, Comet Linear broke apart during its closest approach to the Sun. When the cloud of debris was analyzed, astronomers were surprised to find that it contained about 100 times more rocky material than ice.
The European Space Agency's Giotto probe met Halley's Comet on March 16, 1996. Among several discoveries, the comet was found to be covered with a black crust. Bright jets of ionized gas, or plasma, blasted out from its surface in three highly localized areas. Water was present in Halley's coma, but according to Horst Uwe Keller of the Max Planck Institut für Aeronomie: "We discovered that a comet is not really a 'dirty snowball' since dirt is dominant, not ice. Instead of being spherical like a warm snowball, a comet nucleus is elongated. The physical structure of a comet's interior is defined by its dust content rather than its ice content."
Comet Shoemaker-Levy 9 fragmented into several large pieces that plunged into Jupiter's atmosphere during the summer of 1994. It was hoped that the remnants of the fractured nucleus would expose fresh ices that would then sublimate. Spectrographic results from the Hubble Space Telescope showed no evidence for volatile gases in the debris clouds around the fragments. Auroral emissions were also detected in the atmosphere of Jupiter after the impact of fragment K, something that was unexpected and then attributed to "snowplow" effects as shock waves pushed the atmosphere aside.
Now, with the latest news release from Spitzer about Holmes 17P, scientists are again confounded by the workings of comets. "The data we got from Spitzer do not look like anything we typically see when looking at comets," said Bill Reach of NASA's Spitzer Science Center at Caltech.
What are called "streamers" have been found inside the shell of gas and dust that makes up the haze around the comet's nucleus. Spitzer team members have not yet determined why the twisted threads of material continue to point in the same direction. They remain in the same alignment as they had since their initial formation. Despite several months of travel, they have not rotated to stay aligned with the Sun. As has been discussed in previous Picture of the Day articles, the braided filaments are the sign of helical Birkeland currents.
Outbursts like those on Holmes 17P are how Electric Universe theorists expect comet tails to be produced. Because electric discharges are capable of removing solid material from surfaces, no volatile gases exploding out of "trapped pockets," then pushed away by radiation pressure, are necessary. A comet will produce a tail when electrical stress reaches a critical point and its plasma sheath starts to glow. Irrespective of its composition, a comet will obey the fundamental behavior of charged objects interacting with one another.
A comet's tail is created when its electric charge is struck by solar discharge plasma, conventionally called the "solar wind." As a comet approaches the Sun, its nucleus moves through envelopes of increased charge density. Its surface charge and internal polarization, developed in deep space, respond to the Sun's charged environment, changing its electrical potential.
As it moves away from the Sun, a comet's electrical balance with respect to the outer solar system will be different than when it was on its inward trajectory. If it meets another electrified plasma field of some kind it could begin to discharge again. What more electrically dynamic region than the one that exists around the gas giant planets?
Recent revelations about comets are more easily understood within the electric comet theory than within theories that depend on gravity and sublimation. The black, burned nuclei; the craters and rocky landscapes instead of ice fields; the narrow, energetic jets; the ion tails pointing toward the Sun; the sulfur compounds that require high temperatures to form; and the abundance of ultra-fine dust all point to electricity as their common source. Most important of all, water vapor is more prevalent farther away from the nucleus than close in—surely the exact opposite of what should be found if water ice and frost are what drive cometary jets.
The faster a comet's electrical environment changes, the more likely that flaring and fragmentation will occur. It seems probable that Holmes 17P is traveling through conductive strands of plasma that are energizing it enough for its "shell" to enter a glow-mode discharge state. The filamentary steamers are significant evidence for that contention.
By Stephen Smith
As Cassini swooped upward from a death-defying 52-kilometer (31-mile) plunge past Enceladus two weeks ago, it skirted the edge of Enceladus' south polar plume, scooping up particles and gases to sample their composition. To the evident surprise of the Cassini science team, the gases that were tasted by Cassini's Ion and Neutral Mass Spectrometer (INMS) bore a strong resemblance to the gases that issue from comets. Whether the particles in Enceladus' vents also "taste like comet" cannot be said, because an error in new software uploaded for the flyby prevented the Cosmic Dust Analyzer (CDA) from collecting data during the close approach.
The spectrometer on Cassini, the Cassini Plasma Spectrometer (CAPS) discovered a surprise: the ice particles are electrically charged.
“What are particularly fascinating are the bursts of dust that CAPS detects when Cassini passes through the individual jets in the plume” says Jones. “Each jet is split according to charge though”, adds Arridge, “Negative grains are on one side, and positive ones on the other”.
Arridge said that perhaps, as these charged grains travel away from Enceladus, their paths are bent by electric and magnetic fields in Saturn’s giant magnetosphere.