Current Events

  • 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.

Hubble Space Telescope

The Hubble Space Telescope (HST) was one of the most important exploration tools of the past two decades, and will continue to serve as a great resource well into the new millennium. The HST found numerous objects while photographing nebulae, galaxies, stars and other distant objects.

The Hubble was first launched in 1990 from Space Shuttle Discovery, but the project began many years before. The design and construction started in the 1970's, and some say scientists dreamed up the idea even before that. The project is a joint one between the National Aeronautics and Space Administration (NASA) and the European Space Agency (ESA).

The observatory and its many instruments orbit the Earth at approximately 600 km above the surface. The instruments include cameras that take pictures of distant objects and spectrographs that analyze incoming light. Between 1993 and 2009, NASA sent five Space Shuttle missions to the Hubble to repair it and install new scientific instruments. The Hubble is expected to continue operating through 2015-2020.

The Hubble was only the first four "Great Observatories" launched by NASA. Although Hubble's instruments make observations in ultraviolet, visible, and near-infrared wavelengths, the Compton Gamma Ray Observatory, the Chandra X-ray Observatory, and the Spitzer Space Telescope (infrared) study our universe by observing more of the electromagnetic spectrum.

Below is a short list of the many discoveries involving the HST. There are many more news pieces about the Hubble in Headline Universe.

Last modified May 19, 2009 by Dennis Ward.

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