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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.
Here's what New Horizons may look like when it flies past Pluto in 2015. Can you spot Pluto's large moon, Charon, in the background? Can you see the Sun, which is very far away?
Click on image for full size
Image courtesy Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute.

New Horizons Mission to Pluto

A spacecraft is going to Pluto! The name of the spacecraft is New Horizons. New Horizons will be the first spacecraft ever to go to Pluto!

Pluto is very, very far away. It will take New Horizons nine years to get to Pluto! New Horizons blasted off in January 2006. But it won't get to Pluto until 2015.

The spacecraft will do a "gravity slingshot" move when it passes Jupiter. That will make the spacecraft go really fast. It will go 47,000 miles per hour (about 21 kilometers per second) for a while.

When New Horizons gets to Pluto it will study the frozen world. It will also study Pluto's big moon Charon. It will take pictures. It will send back readings from its instruments. Those will tell us about Pluto's atmosphere and magnetic field.

New Horizons won't stop after it passes Pluto. It will also study at least one Kuiper Belt Object (KBO). KBOs are giant iceballs that are sort of mini-planets. Most KBOs are even farther away than Pluto!

Last modified February 16, 2007 by Randy Russell.

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