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...years. Novelist Arthur Conan Doyle, who visualized the earth's shell as a living creature, made his fictional Professor Challenger poke a sharp drill eight miles down, called his story When the World Screamed. AMSOC's goal is to pierce the Mohorovicic discontinuity, which scientists call the Moho for short...

Author: /time Magazine | Title: Science: Down to Moho | 4/6/1959 | See Source »

Flexible Finger. The Moho was discovered in 1909 by Seismologist A. Mohorovicic of Yugoslavia, when he noticed that the speed of earthquake waves increases suddenly at a certain level under the earth's surface (the depth varies from place to place). This suggested that the Moho marked a dividing line between different materials. Geologists believe that the Moho is the bottom edge of the granite and basalt that forms the lower layer of the earth's crust; under it is the earth's mantle consisting of a mixture of silicates and nickel-iron, which in turn encloses...

Author: /time Magazine | Title: Science: Down to Moho | 4/6/1959 | See Source »

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