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Keyword: magnetosphere

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  • Forget global warming, worry about the MAGNETOSPHERE: Earth's magnetic field is collapsing ...

    01/28/2014 4:32:23 AM PST · by Daffynition · 89 replies
    Daily Mail ^ | 27 January 2014 | Ellie Zolfagharifard
    Full title: Forget global warming, worry about the MAGNETOSPHERE: Earth's magnetic field is collapsing and it could affect the climate and wipe out power grids Deep within the Earth, a fierce molten core is generating a magnetic field capable of defending our planet against devastating solar winds. The protective field extends thousands of miles into space and its magnetism affects everything from global communication to animal migration and weather patterns. But this magnetic field, so important to life on Earth, has weakened by 15 per cent over the last 200 years. And this, scientists claim, could be a sign that...
  • ScienceCasts: Hidden Magnetic Portals Around Earth

    06/29/2012 3:21:43 PM PDT · by tired&retired · 25 replies
    NASA Science ^ | June 28, 2012 | NASA Science
    A NASA-sponsored researcher at the University of Iowa has developed a way for spacecraft to hunt down hidden magnetic portals in the vicinity of Earth. These portals link the magnetic field of our planet to that of the sun. Excellent video on the science of our magnetosphere and how we are just learning about field reversal that open and close between earth and the sun.
  • ScienceCasts: The Surprising Power of a Solar Storm

    06/29/2012 3:14:56 PM PDT · by tired&retired · 10 replies
    NASA Science ^ | March 22, 2012 | NASA Science
    A flurry of solar activity in early March dumped enough heat in Earth's upper atmosphere to power every residence in New York City for two years. The heat has since dissipated, but there's more to come as the solar cycle intensifies. At 2:16 minutes into the video it very clearly says that the CO2 is one of the most efficient coolants in the atmosphere and that it reflected 95% of the radiation back into outer space. This entire series of videos is excellent.
  • A Giant Breach in Earth's Magnetic Field

    12/16/2008 2:11:19 PM PST · by TaraP · 203 replies · 5,747+ views
    NASA ^ | Dec 16th, 2008
    Dec. 16, 2008: NASA's five THEMIS spacecraft have discovered a breach in Earth's magnetic field ten times larger than anything previously thought to exist. Solar wind can flow in through the opening to "load up" the magnetosphere for powerful geomagnetic storms. But the breach itself is not the biggest surprise. Researchers are even more amazed at the strange and unexpected way it forms, overturning long-held ideas of space physics. "At first I didn't believe it," says THEMIS project scientist David Sibeck of the Goddard Space Flight Center. "This finding fundamentally alters our understanding of the solar wind-magnetosphere interaction." The opening...
  • Astronomy Picture of the Day 10-15-02

    10/15/2002 3:13:14 PM PDT · by petuniasevan · 5 replies · 310+ views
    NASA ^ | 10-15-02 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 October 15 Aurora's Ring Credit & Copyright: Trygve Lindersen Explanation: Gusting solar winds and blasts of charged particles from the Sun made the early days of October rewarding ones for those anticipating auroras. While out enjoying the stormy space weather from Toemmeraas, Norway, Trygve Lindersen recorded this picturesque apparition of the northern lights with a digital camera on October 6. From this perspective, the curtains of green...