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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.
Look for Capricornus, the Goat, in September.
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Capricornus

The constellation Capricornus represents the figure of either a goat or a sea-goat in the sky. It is believed to be the oldest constellation known. Capricornus is also a member of the Zodiac, a special group of constellations that the Sun travels through every year.

Because Capricornus is so old, there are several different myths about this dim constellation. Some civilizations believed that Capricornus was the Gate of the Gods, a region in the sky where souls passed when humans died. Other beliefs concentrated on a figure of a goat or even a sea-goat. A sea-goat was part goat, part fish.

In Greek myth, Capricornus was associated with Pan. During a picnic, a monster called Typhon attacked the gods. The gods turned themselves into animals and fled, but Pan couldn't decide what to be. Finally, he jumped into the Nile River, at which point he transformed. His lower half was in water, so it became a fish. However, his upper-half was still dry, so it stayed a goat.

The Tropic of Capricorn got its name from this ancient constellation. At one time, the Sun reached the winter solstice while passing in front of Capricornus. At that time, the Sun had reached its lowest point in the southern sky-- 23.5 degrees south of the celestial equator. Even though the winter solstice no longer occurs in Capricorn, we still recognize the Tropic of Capricorn as the lowest latitude on Earth where the Sun lies directly overhead.

Capricornus is one of the dimmest constellations and contains only a few celestial objects. A globular cluster named M30 is located to the left of Capricornus. Lying 41,000 light years from Earth, M30 should be looked at through a telescope to see the individual stars.

It is easiest to see Capricornus in September. You'll find it below Aquarius and next to Aquila.

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