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  • Atmospheric CO2 Level Tops 400 ppm
    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm rep...Read more

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    Atmospheric CO2 Level Tops 400 ppm

    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For more on the Keeling Curve, see http://keelingcurve.ucsd.edu/. Find out more about greenhouse gases and warming.
  • Massive Tornado Outbreak on Tornado Alley
    The week of May 19 brings dozens of tornadoes to Tornado Alley in the states of Oklahoma, Kansas, Io...Read more

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    Massive Tornado Outbreak on Tornado Alley

    The week of May 19 brings dozens of tornadoes to Tornado Alley in the states of Oklahoma, Kansas, Iowa, Illinois and Missouri. On May 20th, a massive tornado struck Moore, Oklahoma, devastating communities - destroying over 100 homes and hitting two elementary schools and a hospital - with many casualties and deaths. Our thoughts are with our friends and colleagues suffering from these storms. For more on the May 20th storms, see the NOAA Storm Prediction Center Storm Report.
  • 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.
This is a schematic showing where material forms.
Click on image for full size
Image from: After Moons and Planets

The effect of temperatures on the condensation of certain materials

In the picture, the proto-sun is shown at the top, and the temperature in the nebula is shown to decrease with distance away from the proto-sun, towards the bottom of the drawing.

The temperature at which ice begins to form solid material is the freezing temperature, near 250 K on the diagram. The temperature at which rocky materials, of which the terrestrial planets are made of, such as Calcium, Magnesium, Iron, Nickel, and Lead, can begin to form solid material, is much higher.

Thus solid material condensed close to the proto-sun, and formed the terrestrial planets. Solid material also condensed in the middle of the nebula, near the proto-Jupiter, but Jupiter also drew ice and many of the very simple gases from the nebula. The gaseous material which Jupiter drew from the nebula stayed, while the gaseous material which the terrestrial planets drew from the nebula probably drifted away.


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