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.

Missions to Saturn


Mission Country Launch Date Arrival Date Type Encounter Characteristics

Pioneer 11 USA April 6, 1973 September 1, 1979 Flyby Transmitted low-resolution images and other data about Saturn.
Discovered additional rings and moons not previously known
Voyager 1 USA September 5, 1977 November 13, 1980 Flyby 900 images of Saturn's moons
Major discoveries were the unexpected complexity of the rings and the true nature of Titan's atmosphere.
Voyager 2 USA August 20, 1977 August 26, 1981 Flyby 1150 images of Saturn's moons
Had a scan platform malfunction, yet virtually all objectives were met.
Cassini USA, ESA, Italy October 13, 1997 July 1, 2004 Orbiter/Atmospheric probe 12 science experiments will help scientists understand Saturn's moons, rings, atmosphere, and magnetosphere.
Huygens, an atmospheric probe carried aboard Cassini, will parachute through Titan's atmosphere.

An Overview of Space Exploration

Last modified January 12, 2005 by Randy Russell.

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