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  • Kansas Legislator Proposes Bill to Outlaw Sustainability Education
    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of ...Read more

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    Kansas Legislator Proposes Bill to Outlaw Sustainability Education

    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of sustainability. Here is a link to the one-page bill: http://www.kslegislature.org/li/b2013_14/measures/documents/hb2366_00_0000.pdf. See report on Bloomberg News.
  • Earth's Center Is 1,000 Degrees Hotter Than Previously Thought, Synchrotron X-Ray Experiment Shows
    Scientists have determined the temperature near the Earth’s center to be 6000 degrees Celsius, 1000 ...Read more

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    Earth's Center Is 1,000 Degrees Hotter Than Previously Thought, Synchrotron X-Ray Experiment Shows

    Scientists have determined the temperature near the Earth’s center to be 6000 degrees Celsius, 1000 degrees hotter than in a previous experiment run 20 years ago. These measurements confirm geophysical models that the temperature difference between the solid core and the mantle above, must be at least 1500 degrees to explain why the Earth has a magnetic field. For more information about this study, see the press release from the European Synchrotron Radiation Facility.
  • Ocean Volcanic Rocks Contain Samples of Recycled Crust
    Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials fr...Read more

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    Ocean Volcanic Rocks Contain Samples of Recycled Crust

    Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials from the early Earth’s crust. But decisive evidence for this phenomenon has proven elusive. New research from a team including Carnegie’s Erik Hauri demonstrates that oceanic volcanic rocks contain samples of recycled crust dating back to the Archean era 2.5 billion years ago. Their work is published in Nature. Oceanic crust sinks into the Earth’s mantle at so-called subduction zones, where two plates come together. Much of what happens to the crust during this journey is unknown. Model-dependent studies for how long subducted material can exist in the mantle are uncertain and evidence of very old crust returning to Earth’s surface via upwellings of magma has not been found until now. For more information about these results, see the press release from the Carnegie Institution.
Picture from the "Book of the Dead". One of the two figures with an orange disk is Re-Harakhti, the other may be Re. The other two figures are pharaohs.
Click on image for full size
Image courtesy James Wasserman, The Egyptian Book of the Dead, Chronicle Books.

Re

Re was known as the sun-god and the creator in ancient Egypt. He took on many forms, each depending on where he was. Usually Re was portrayed with a hawk head, wearing a fiery disk like the Sun on his head. Surrounding the disk was a cobra-goddess, representing his power to bring death. In the Underworld, the god took the form of a ram-head. In this form, Re even had power over Osiris, ruler of the Underworld.

Re was considered the creator of our world. In the beginning of time, an egg rose from the primeval waters. Once out of his shell, Re had two children, Shu and Tefnut, who became the atmosphere and clouds. They had more children, Geb and Nut, who became the Earth and the stars. They in turn had two sons, Seth and Osiris, the father of Horus.

It is said that Re wept one day, which lead to the creation of humans from his tears. He also created the four seasons for the Nile, a very important river in Egypt. Re combines with Horus to form Re-Harakhte, god of the Sun and the heavens.

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Nut was the Egyptian sky goddess. She was depicted as a giant, naked woman who was supporting the sky with her back. Her body was blue and covered by stars. Ancient documents describe how each evening,...more

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The Spring 2011 issue of The Earth Scientist is focused on modernizing seismology education. Thanks to IRIS, you can download this issue for free as a pdf. Print copies are available in our online store.

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