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    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.
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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
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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.
Look for Capricornus, the Goat, in September.
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Capricornus

The constellation Capricornus represents the figure of either a goat or a sea-goat in the sky. It is believed to be the oldest constellation known. Capricornus is also a member of the Zodiac, a special group of constellations that the Sun travels through every year.

Because Capricornus is so old, there are several different myths about this dim constellation. Some civilizations believed that Capricornus was the Gate of the Gods, a region in the sky where souls passed when humans died. Other beliefs concentrated on a figure of a goat or even a sea-goat. A sea-goat was part goat, part fish.

In Greek myth, Capricornus was associated with Pan. During a picnic, a monster called Typhon attacked the gods. The gods turned themselves into animals and fled, but Pan couldn't decide what to be. Finally, he jumped into the Nile River, at which point he transformed. His lower half was in water, so it became a fish. However, his upper-half was still dry, so it stayed a goat.

The Tropic of Capricorn got its name from this ancient constellation. At one time, the Sun reached the winter solstice while passing in front of Capricornus. At that time, the Sun had reached its lowest point in the southern sky-- 23.5 degrees south of the celestial equator. Even though the winter solstice no longer occurs in Capricorn, we still recognize the Tropic of Capricorn as the lowest latitude on Earth where the Sun lies directly overhead.

Capricornus is one of the dimmest constellations and contains only a few celestial objects. A globular cluster named M30 is located to the left of Capricornus. Lying 41,000 light years from Earth, M30 should be looked at through a telescope to see the individual stars.

It is easiest to see Capricornus in September. You'll find it below Aquarius and next to Aquila.

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