Current Events

  • 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.
Launch of the Mars Global Surveyor spacecraft. MGS was launched on November 7, 1996. MGS arrived at Mars on September 11, 1997.
Click on image for full size
Courtesy of NASA.

Instruments of the Mars Global Surveyor Mission

Mars Global Surveyor (MGS) is conducting mapping operations at Mars more than 30 years after America's first reconnaissance missions reached the mysterious red planet. Here are some of the instruments carried onboard. Many of these instruments were inherited from the Mars Observer mission. These instruments are designed to study the weather and surface of Mars:

  • A camera to produce daily weather images of Mars similar to weather photographs of the Earth shown on the nightly news.
  • A laser altimeter to bounce beams of light off of the surface to measure the heights of mountains and depths of valleys.
  • A thermal emission spectrometer to scan for heat emitted from Mars to study the atmosphere and to map the mineral composition of the surface. Surface temperature maps are being created daily.
  • A magnetometer to study the magnetic properties of Mars to gain insight into the interior of the planet. An important new result from the mission is the definite confirmation of the presence of a Martian magnetic field.

An analysis of radio signals sent to Earth from Surveyor will reveal the precise shape of the planet and structure of the atmosphere. New findings about the shape of the atmosphere already had an effect on determining the aero-braking process.


Last modified May 10, 2001 by Jennifer Bergman.

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We now offer the Cool It! card game in our Science Store. Cool It! is the new card game from UCS that teaches kids about the choices we have when it comes to climate change.

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