This will be confirmed when the Rosetta missions robotic lander called Philae attempts to land on comet comet 67P on 12th November. Especially when the lander attempts to use ice screws to secure itself to the rocky surface.
Comet 67P is pure mineral and rocky material with no ice core. The proposed composition of the Rosetta comet is based on planetary accretion/formation where comets are ice mountains formed out of material at the start of the universe.
The EU theory suggests that all comets and asteroids are the same thing and made out of rocky material when space bodies where subject to strong electromagnetic discharges, such as the ‘thunderbolts of the gods’ that the ancient stories mention.
Comet 67P is rocky
As suggested in the video below by thunderbolts.info and Wal Thornhill the composition of comet Churyumov–Gerasimenko will be totally different to what the mathematics and standard theories predict because of the electromagnetic nature of the universe and especially how that relates to mass and matter.
If mass does not equal the quantity of matter, if in the equation e=mc2 the mass of sub atomic particles is an energetic variable dependent on the local electrical environment (which would explain why the universal constant of gravitation is so variable), then comet 67P will have to be predicted to be very different to what standard theories suggest. A similar surprise has been found with Saturn’s moon Mimas, that its orbit is very different to what its predicted composition should be. Are planetary bodies orbits also electromagnetically influenced?
But of course when the Rosetta comet 67P is found to have no ice core and be rocky those theories that failed can be modified. While the Electric Universe theory that successfully predicted rocky comet 67P will be mocked as pseudo science with no scientific evidence.
Emily sounded slightly more gloomy. “I feel like I’ve been teased about what the surface of a comet is really like. We know it’s hard, and pebbly, but we didn’t really get to learn what it was made of.”
Reminiscing about the week of comet landing | ESA
Update 29/10/2015 – rocky comet 67P Churyumov-Gerasimenko
But despite this wealth of visual evidence for researchers there is a lot we still don’t know about the comet – including why it is covered in organic material rather than just ice and what causes its powerful jets of dust and ice.
One of the big surprises of the Rosetta mission has been discovering just how dark 67P is: completely unlike an “dirty snowball”, which was how astronomer Fred Whipple described comets in the 1950s. Although images from missions to other comets have shown surfaces that are more likely to be mixtures of ice and rock, findings from an instrument called the Visible and Infrared Thermal Imaging Spectrometer onboard Rosetta have shown that 67P is rocky and almost completely covered in a layer of organic compounds – which was not expected. So where is all the ice?
… leading to different patterns of rock fracturing and dust removal.
Rosetta scientists unveil the source of ice and dust jets on comet 67P | phys.org
Comet 67P is not rock quotes
“We will stay with the comet through its most active phase, and then afterwards through the decay of activity. We are expecting to see the comet evolve and the surface evolve. We might start to see the boulders moving, falling apart and even reforming.”
Rosetta captures high resolution images of comet 67P (Dr Holger Sierks Esa)
So for Philae to succeed at landing, a soft surface will be preferable – something like a “snowdrift”.
We’re not sure what the strength of the surface materials is, but, if Philae encounters a consistency like “cigarette ash” or “champagne snow” – as some scientists have speculated – there’s every hope it will become embedded in the surface.
Looking ahead to the landing (bbc live blog)
“We thought it was going to be a more-or-less smooth potato shape, but… there are craters and cliffs and boulders and crevasses all over this amazing comet”, he told the BBC’s Rebecca Morelle.
“And it really is this kind of a colour. It’s as dark as charcoal because it’s covered in a thick layer of dust… the ice which we think is in there, is mostly inside.”
Rosetta landing: What is comet’s structure like?
Wikipedia latest changes to the dirty snowball comet theory
Comet nuclei range from a few hundred metres to tens of kilometres across and are composed of loose collections of ice, dust, and small rocky particles.
The solid, core structure of a comet is known as the nucleus. Cometary nuclei are composed of an amalgamation of rock, dust, water ice, and frozen gases such as carbon dioxide, carbon monoxide, methane, and ammonia. As such, they are popularly described as “dirty snowballs” after Fred Whipple’s model. However, some comets may have a higher dust content, leading them to be called “icy dirtballs”.
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