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According to statistical estimates, Earth's rocks should have a much higher concentration of carbon dioxide inside them than proven scientifically, and the discrepancy has experts asking where the rest of the chemical went. The estimates were drawn from the amount of carbon that can be found in the planet-forming regions of our galaxy, the Milky Way, which should in theory be translated into approximate concentrations in the rocks as well. Another mystery to geologists is why meteorites found on Earth also have low carbon concentrations, when comets seem to show no deviation from the general rule. In the vastness of space, the interstellar medium is filled with dust containing carbon-rich and silicate-rich grains. These elements can be found on a large scale in this environment, but for some reason, only silicon made its way plentifully in our planet's crust. In fact, geologists believe, it's silicon that is the bulk material making up Earth, for example, and most likely ot!
her planets and moons in the solar system and beyond as well. But, until now, there was no reasonable explanation astronomers could think of that would have explained why carbon falls short of its expected proportion in rocks and meteorites. University of Michigan in Ann Arbor (UMAA) expert Ted Bergin believes that responsible for the de...
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http://news.softpedia.com/news/Tracking-Down-the-Planet-039-s-Missing-Carbon-118991.shtml
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