Current Events

  • 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.

Venus Statistics

Planetary Symbol: Name in Roman/Greek Mythology: Venus/Aphrodite
Diameter: 12,104 km (7,522 miles) Rotation Period about Axis: 243 days (retrograde)
Mass: 4.87x10^24 kilograms (0.82 x Earth's) Revolution Period about the Sun: 0.62 years
Density: 5,243 kg/m^3 Tilt of Axis: 177-178o
Minimum Distance from Sun: 108 million km
(67 million miles)
Surface Gravity: 8.87 m/s^2 (0.90 x Earth's)
Maximum Distance from Sun: 109 million km
(68 million miles)
Average Temperature (C/F): 457o C (855o F)
Orbital Semimajor Axis: 0.72 AU (Earth=1 AU) Average Surface Temperature (K): 730K
Minimum Distance from Earth: 40 million km
(25 million miles)
Satellites: 0

Venus Image Archive

Comparative Planetary Statistics -- in table form

Comparative Orbital Statistics -- in table form

Actual Distance to Earth

Last modified February 16, 2001 by Jennifer Bergman.

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