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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 Mars Odyssey spacecraft was launched aboard the Delta II rocket shown here. Launch occurred from Cape Canaveral Air Force Station in Florida.
Click on image for full size
Courtesy of NASA/JPL

Mars Exploration Takes on a Whole New Look This Spring
News story originally written on April 19, 2001

In the 1990's, NASA was hit with the back-to-back loss of the spacecraft composing the Mars Observer and Mars '98 missions. About a year ago, things started to look up for Mars exploration. For the last year, the Mars Program Director, G. Scott Hubbard fixed problems and gave the NASA Mars Exploration program solid footing. "Scott Hubbard was given 'mission impossible' and turned it into 'mission accomplished,'" said Dr. Ed Weiler, Associate Administrator for Space Science at NASA Headquarters. "When we were hit with the back-to-back loss of two Mars missions, I knew we had to get the best person on the job. Scott did a top-to-bottom reorganization of the program, and earlier this month we had the first launch in the new program, the 2001 Mars Odyssey."

Hubbard announced today that he will be leaving his post as Mars Program Director, but he will be leaving things in good hands. Orlando Figueroa will take Hubbards place. Dr. Weiler said, "I feel confident that the Mars program will be in extremely good hands. With Hubbard at the helm the past year and Figueroa ready to take charge, Mars exploration now has a solid basis to build on and a clear direction for the future."

Indeed, this new phase of Mars exploration has gotten off to a good start. The 2001 Mars Odyssey probe was launched on April 7, 2001. It is scheduled to arrive at Mars in October 2001. While it orbits the Red Planet, the Odyssey will remotely collect data about what chemicals and minerals make up the Martian surface. It will also provide vital information about potential radiation hazards for future human explorers.

Five other major Mars missions are being planned for the next decade. NASA plans to launch twin rovers which will land on Mars in 2003 and a powerful scientific orbiter to be launched in 2005. A mobile science laboratory and the first of several smaller Scout missions are planned for 2007. Wrapping up this phase of exploration would be a sample return mission possibly as early as 2011.

Last modified April 19, 2001 by Jennifer Bergman.

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