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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.
This is a picture of the lunar farside taken on 12/24/1968. The picture was taken from the Apollo 8 spacecraft.
Click on image for full size
Courtesy of NASA

What are the flat surfaces on the Moon called? What is maria? What are lunar highlands?

What phase was the Moon in on December, 22 1962? How long does it take the Moon to travel from one phase to the next?

Suppose that the Moon spun twice on its axis during each orbit around the Earth. How would study of the Moon from the Earth be easier?

If the Moon is tilted only slightly with respect to the Sun, do the lunar poles receive nearly constant sunlight?

Wow! More Moon questions! Okay, here goes... There 2 types of surfaces on the Moon. Dark regions on the Moon are called maria. They are flat and don't have many craters. The light highlands are hilly and are covered with craters.

The U.S. Navy has created a web page where you can find the moon phase for any day. Check it out! It takes the Moon almost 4 days to get from one phase to the next.

We can only see half of the Moon from Earth. The Moon is locked into a specific orbit around the Earth so that we only see one side. If the Moon spun twice during each orbit around the Earth, it wouldn't be locked into that orbit and we could see the far side of the Moon from Earth. As it is now, we can only see the far side of the Moon when a spacecraft takes a look for us.

And yup, since the Moon is tilted only a tiny bit, the poles do receive NEARLY constant sunlight.

Submitted by Nicholas (age 30, Rhode Island, U.S.A.), Megan (middleschool), Vilma (age 13, Texas, U.S.A.), Craig (age 13, North Carolina, U.S.A.), Margaret (age 15, Oklahoma, U.S.A.), Vicky (age 15, New York, U.S.A.), Joni (age 37, West Virginia, U.S.A.)
(January 12, 2001)
Last modified January 10, 2001 by Jennifer Bergman.

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