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Volcano in Chile

10 Jun 2011, 23:31 UTC
Volcano in Chile
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Image taken June 8 by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite. Since June 4 Chile's Puyehue volcano has been violently erupting, sending smoke and ash many miles into the atmosphere. In this photo the ash cloud appears to have made a turn, going North before being caught in Easterly winds and drifting past the mouth of Rio de la Plata. The cloud has closed airports in Argentina and even Brazil.What could cause such smoke and fury? Why is Earth's interior, along with that of other planets, so hot? The textbook answer is "radioactive decay," but radioactive elements are rare in Earth's core. Meteorites dating from the time of Earth's formation are composed of nickel and iron. Radioactive elements were created in supernova explosions, and arrived much later.Earth's crust, in which we sit, has the largest proportion of radioactive elements. Earth's core has temperatures in thousands of degrees, hot enough to melt lead. Even the most radioactive samples that can be found in the crust are not hot enough to melt. The hypothesis of radioactive decay in Earth's core is not supported by geological evidence.If Earth formed around a tiny Black Hole, radiation from the singularity would ...

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