News tagged with geomagnetic field
Moon geology could solve three mysteries of early Earth
Space & Earth / Earth Sciences
Dec 08, 2008 |
4.1 / 5 (37) |
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(PhysOrg.com) -- Not much is known about the Earth before 4 billion years ago, the earliest period in the planet’s 4.5-billion-year history. Because Earth has lost almost all geological records of this era ...
Paleomagnetists put controversy to rest
Space & Earth / Earth Sciences
Oct 02, 2009 |
4.5 / 5 (10) |
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(PhysOrg.com) -- Princeton University scientists have shown that, in ancient times, the Earth's magnetic field was structured like the two-pole model of today, suggesting that the methods geoscientists use ...
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The Earth's magnetic field remains a charged mystery
Space & Earth / Earth Sciences
Jun 15, 2009 |
4.7 / 5 (26) |
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400 years of discussion and we’re still not sure what creates the Earth’s magnetic field, and thus the magnetosphere, despite the importance of the latter as the only buffer between us and deadly solar wind ...
Spring is Aurora Season
Space & Earth / Earth Sciences
Mar 04, 2008 |
4.4 / 5 (16) |
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What are the signs of spring? They are as familiar as a blooming daffodil, a songbird at dawn, a surprising shaft of warmth from the afternoon sun. And, oh yes, don’t forget the aurora borealis. Spring is ...
Scientists Predict Big Solar Cycle
Dec 22, 2006 |
4.4 / 5 (62) |
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Evidence is mounting: the next solar cycle is going to be a big one. Solar cycle 24, due to peak in 2010 or 2011 "looks like its going to be one of the most intense cycles since record-keeping began almost ...
Killer electrons in space are now less mysterious
Jul 26, 2007 |
4.3 / 5 (33) |
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A rare, timely conjunction of ground-based instrumentation and a dozen satellites has helped scientists better understand how electrons in space can turn into ‘killers’. ESA’s Cluster constellation has contributed ...
Scientists weather a space storm to find its origin
Aug 02, 2005 |
3 / 5 (2) |
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A team of researchers from the UK and France used SOHO, ACE and the four Cluster spacecraft to study a huge eruption on the Sun, tracing its progress from birth to when it reached Earth.
Bacterium found to have strange magnetic personality
Feb 17, 2006 |
4.4 / 5 (8) |
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Researchers led by an MIT graduate student have discovered a bacterium that is a magnetic misfit of sorts. Magnetotactic bacteria contain chains of magnetic iron minerals that allow them to orient in the Earth's ...
Magnetic Misfits: South Seeking Bacteria in the Northern Hemisphere
Jan 20, 2006 |
3.8 / 5 (6) |
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Magnetotactic bacteria contain chains of magnetic iron minerals that allow them to orient in the earth’s magnetic field much like living compass needles. These bacteria have long been observed to respond to ...
Toxic molecule may help birds 'see' north and south
Jun 22, 2009 |
4 / 5 (3) |
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Researchers at the University of Illinois report that a toxic molecule known to damage cells and cause disease may also play a pivotal role in bird migration. The molecule, superoxide, is proposed as a key ...
The auroras in the Northern and the Southern hemispheres are not identical (w/ Video)
Space & Earth / Earth Sciences
Jul 23, 2009 |
5 / 5 (7) |
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In a Nature letter published July 23, 2009, Norwegian researchers present evidence that the auroras in the Northern and the Southern hemispheres can be totally asymmetric. These findings contradict the co ...
Reversals of Earth's Magnetic Field Explained by Small Core Fluctuations
Apr 23, 2009 |
4.7 / 5 (42) |
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(PhysOrg.com) -- Based on studies of old volcanic basalt, scientists know that the Earth’s magnetic field reverses at irregular intervals, ranging from tens of thousands to millions of years. Volcanic basalt ...
List of search results for geomagnetic field
