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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.
The Rosetta spacecraft on its fueling stand.
Click on image for full size
Courtesy of the European Space Agency

Rosetta Mission Page

The Rosetta Mission was suppose to launch in January 2003. Unfortunately, the launch had to be delayed! The good news is that Rosetta has a new launch date, February 26, 2004.

Rosetta will not meet up with comet Wirtanen as was originally planned. Instead, the spacecraft will fly towards comet 67P/Churyumov-Gerasimenko. (shortened as comet C-G)

After launch, Rosetta will then begin a ten year journey to the comet C-G. Rosetta will study this comet in detail, in hopes that this will lead to new scientific findings about all comets. Learning about comets helps us learn about our own solar system and about how the solar system originally formed.

The Rosetta spacecraft is actually made of two parts: an orbiter, which will approach the comet and then circle it, and a lander, which will touch down on the comet. Rosetta has many complex scientific instruments that will help us find out about this comet's nucleus, coma and tail.

The Rosetta spacecraft is named after the Rosetta stone, a famous stone that allowed us to figure out what Egyptian hieroglyphics say.

Scientists are excited about new discoveries Rosetta might help make. This is the first comet mission where part of a spacecraft will actually touch down on a comet. Watch for news to come regarding the Rosetta Mission!

Last modified July 15, 2010 by Randy Russell.

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