Originally posted by gingerjedi
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Golden showers
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Originally posted by AtW View PostQuestion - what would happen to price of gold on world markets if an all gold asteroid size of Moon shown below collides with this planet?
HTHComment
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Originally posted by Cliphead View PostSome diamonds to be found are older than the Earth, albeit very small.Originally posted by MaryPoppinsI'd still not breastfeed a naziOriginally posted by vetranUrine is quite nourishingComment
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Originally posted by d000hg View PostHow do they measure that? C14 dating isn't usable and even if it was, such techniques are based on the isotope balances found on Earth... if the material originates elsewhere things could be totally different.Comment
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I forgot Carbon had another stable isotope . Makes sense.Originally posted by MaryPoppinsI'd still not breastfeed a naziOriginally posted by vetranUrine is quite nourishingComment
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Originally posted by BrilloPad View PostBut where gold/platinum comes from does not matter.
Now if they found a way to mine more minerals then great. Or create more then great. But to speculate it comes from outer space....
These people aren't "speculating" that precious metals came from outer space, that theory has already been advanced in order to explain why there is so much gold knocking about in accessible places as there should be a lot less. What they have done is advanced the state of the art in isotopic analysis and produced some fairly clear evidence to support that pre-existing theory.
Edit: Non daily wail report here: http://physicsworld.com/cws/article/news/47116While you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.'Comment
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Originally posted by doodab View PostIt's a sad indictment of the state of modern Britain when world class science is frowned upon as being useless because there is no immediate opportunity to exploit it for profit.
No doubt James Clarke Maxwell, Michael Faraday, Isaac Newton et al would have been dismissed as a bunch of ***** pointlessly fannying about unless some way could have been found to make money out of them.Originally posted by MaryPoppinsI'd still not breastfeed a naziOriginally posted by vetranUrine is quite nourishingComment
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Originally posted by d000hg View PostIS this world-class science? Apart from the sensationalism because it's the daily mail, is it that big a deal?
The idea that there is a lot of gold in the Earth's core is not news. It's a well established idea and has been for a long time i.e. 30 years or more. The prevailing wisdom is that gold and other elements soluble in molten iron would have sunk to the Earth's core and hence should be much less abundant in the crust than they are. One (possibly the most widely accepted) explanation for the discrepancy is the "late veneer hypothesis" i.e the idea that the Earth was bombarded by meteorites containing relatively higher proportions of these elements later in it's life. It's also been advanced to account for the amount of water we have. These researchers didn't advance that hypothesis either. What this research has achieved is to measure the relative abundance of tungsten isotopes in some rocks to better than 6 ppm in order to determine if their composition provides evidence for or against the idea. Their results are significant because as well as agreeing with the predictions of the theory it seems they also count against several of the competing hypothesis.
They were unraveling the basic laws of reality, which have been directly responsible for about £10gazillion of industry. I don't think fundamental research and empirical analysis stroke detective work are quite in the same class.Last edited by doodab; 8 September 2011, 08:21.While you're waiting, read the free novel we sent you. It's a Spanish story about a guy named 'Manual.'Comment
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I think the problem comes mainly from the misrepresentation by the Mail. A 'late veneer' hypothesis seems hard to avoid unless asteroids were found not to contain heavy elements, which would be odd. A bit different from the Mail's "golden shower", more like same old shower.
Doodab's link to a better source also says that the new findings support another perhaps more interesting theory, one that I hadn't heard of anyway. That is, that the late bombardment caused the convection currents within the Earth that are still present today, billions of years later
In addition to explaining the distribution of precious metals within the Earth, these meteorite impacts could also explain how large-scale convection cells became established within the mantle. These rising and falling columns of molten magma are the driving force behind tectonics, causing crust to be created where magma upwells at mid-ocean ridges, and to be destroyed at subduction zones where colder magma sinks deep into the Earth's interior.Comment
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10^31 carat diamond found
A closer look reveals it to be an orb with the mass of Jupiter and about half as wide. Sensors indicate it's made of – wait, this can't be right – diamond! Your instruments don't lie. You've just stumbled upon a 1031-carat diamond.
Astrophile: The diamond as big as a planet - space - 25 August 2011 - New ScientistComment
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