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  • Irish Chronicles Document Links Between Volcanoes and Weather
    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong corr...Read more

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    Irish Chronicles Document Links Between Volcanoes and Weather

    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong correlation between the occurrence of volcanic eruptions and extreme cold weather in Ireland over a 1200 year period. Data analyzed in this study cover the period from 431 to 1649, during which time up to 48 volcanic eruptions are identified in Greenland ice core records through deposition of volcanic sulfate in annual layers of ice. You can find the study (open access), published on 6 June 2013 in IOP Publishing's journal Environmental Research Letters, at http://iopscience.iop.org/1748-9326/8/2/024035/article. Find out more about how volcanoes can influence climate.
  • EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US
    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, acco...Read more

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    EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US

    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, according to the National Weather Service in Norman Oklahoma. The tornado, which remained on the ground for 40 minutes and reached 2.6 miles across (4.2 km), took the lives of 18 people including storm chasers Tim Samaras, Paul Samaras and Carl Young. For more information on the tornado, visit http://ow.ly/i/2hfDG.
  • 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.

New Horizons Trajectory Animation

This animation illustrates the trajectory (path through the Solar System) of the New Horizons space mission to Pluto and beyond.

Note: If you cannot see the movie you may need to download the latest QuickTime player.

Movie courtesy of NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute.

The animation begins with the launch of New Horizons from Earth on January 19, 2006. New Horizons zoomed away from our planet at the highest speed of any spacecraft leaving Earth so far... it was traveling at 16.21 km/s (36,300 mph) when its engine shut down!

New Horizons crossed the orbit of Mars on April 7, 2006. The spacecraft safely passed through the asteroid belt between the orbits of Mars and Jupiter during a five month period lasting from May through October 2006.

Next, the animation shows the spacecraft during its Jupiter flyby in February 2007. A gravity assist from the gas giant planet increases New Horizon's speed, cutting years off its journey to Pluto.

The spacecraft is expected to fly past Pluto and its largest moon Charon in July 2015. After that, scientists hope to steer New Horizons on to a close encounter with one or more Kuiper Belt Objects.

More New Horizons mission movies:

Animation icon Animation of the New Horizons mission (6.4 MB)

Animation icon Video of the launch of the New Horizons mission (5.5 MB)

Last modified January 23, 2007 by Randy Russell.

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