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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.

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NASA

Sharper Hubble Space Telescope shows great pictures of Mars
News story originally written on March 20, 1997

NASA's newly improved Hubble Space Telescope (HST) has captured the sharpest views of Mars to date. Less than a month after the astronauts of space shuttle Discovery made repairs to the HST, it has produced great images of the dusty red planet. The photos were taken when Mars was at full opposition. Full opposition means that Mars made one of its closest passes to the Earth (60 million miles).


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A Year in Review...

Space activity in the last year was spectacular! 1997 in space - people are saying this year is second only to 1969 when the U.S. first landed a man on the Moon. Hang on to your hats as we look at the...more

Hubble telescope photo reveals stellar death process.

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Hubble captures the building blocks of galaxies

Recent images of the Hubble space telescope of distant galaxies shows a group of 18 gigantic stars close together that will eventually merge into a few galaxy-sized objects. These images were taken using...more

Hubble deepest-ever view of the universe unveils myriad galaxies back to the beginning of time

Several hundred never before seen galaxies are visible in this "deepest-ever" view of the universe, called the Hubble Deep Field (HDF), made with NASA's Hubble Space Telescope. Besides the classical spiral...more

Hubble focuses on distant galaxies

Astronomers analyzing images of the faintest region of the universe taken from NASA's Hubble Space Telescope (HST), have identified what they believe as the most distant object observed to date. The researchers...more

Hubble peeks into the homes of quasars

NASA's Hubble Space Telescope (HST) is providing astronomers with high resolution images of one of the most baffling objects in the universe, quasars. These new images taken from HST's Wide Field Planetary...more

Sharper Hubble Space Telescope shows great pictures of Mars

NASA's newly improved Hubble Space Telescope (HST) has captured the sharpest views of Mars to date. Less than a month after the astronauts of space shuttle Discovery made repairs to the HST, it has produced...more

More than 100 planets orbit distant stars!

Astronomers have identified another exoplanet, that is, a planet outside our solar system. This makes a total of 102 exoplanets that have so far been found by astronomers! The astronomers that identified...more

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The Spring 2011 issue of The Earth Scientist is focused on modernizing seismology education. Thanks to IRIS, you can download this issue for free as a pdf. Print copies are available in our online store.

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF