News tagged with earths magnetic

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Earth Magnetic Field

The Earth's magnetic field remains a charged mystery

Space & Earth / Earth Sciences

created Jun 15, 2009 | popularity 4.7 / 5 (26) | comments 20

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 ...


Reversals of Earth's Magnetic Field Explained by Small Core Fluctuations

Reversals of Earth's Magnetic Field Explained by Small Core Fluctuations

Physics / General Physics

created Apr 23, 2009 | popularity 4.7 / 5 (40) | comments 25

(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 ...


Sun Often 'Tears Out A Wall' In Earth's Solar Storm Shield

Sun Often 'Tears Out A Wall' In Earth's Solar Storm Shield

Space & Earth / Earth Sciences

created Dec 16, 2008 | popularity 4.5 / 5 (20) | comments 6

(PhysOrg.com) -- Earth's magnetic field, which shields our planet from particles streaming outward from the Sun, often develops two holes that allow the largest leaks, according to researchers sponsored by ...


Cluster watches Earth's leaky atmosphere

Cluster watches Earth's leaky atmosphere

Space & Earth / Earth Sciences

created Aug 28, 2008 | popularity 4.3 / 5 (19) | comments 8

Oxygen is constantly leaking out of Earth’s atmosphere and into space. Now, ESA’s formation-flying quartet of satellites, Cluster, has discovered the physical mechanism that is driving the escape. It turns ...





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China tries to calm unease over rare earths curbs

Space & Earth / Environment

created Sep 03, 2009 | popularity 5 / 5 (1) | comments 3

(AP) -- A Chinese official tried to calm unease about curbs on exports of rare earths used in clean energy products and superconductors, saying Thursday that sales will continue but must be limited to reduce damage to China's ...


Rare earths are vital, and China owns them all

Space & Earth / Earth Sciences

created Sep 28, 2009 | popularity 4.1 / 5 (11) | comments 8

Rare earths may not be on most investors' radars, but they are certainly in almost any high-tech item they use -- and in the world of rare earths, China is king.


Animal magnetism provides a sense of direction

Biology /

created Feb 27, 2008 | popularity 4 / 5 (11) | comments 0

They may not be on most people’s list of most attractive species, but bats definitely have animal magnetism. Researchers from the Universities of Leeds and Princeton have discovered that bats use a magnetic substance in their ...


New element found to be a superconductor

Europium discovery: New element found to be a superconductor

Physics / Condensed Matter

created May 13, 2009 | popularity 3.5 / 5 (17) | comments 2

(PhysOrg.com) -- Of the 92 naturally occurring elements, add another to the list of those that are superconductors. James S. Schilling, Ph.D., professor of physics in Arts & Sciences at Washington University ...


The system Gliese 667 (Artist’s impression)

32 New Exoplanets Found (w/ Video)

Space & Earth / Astronomy

created Oct 19, 2009 | popularity 4.9 / 5 (27) | comments 6

(PhysOrg.com) -- Today, at an international ESO/CAUP exoplanet conference in Porto, the team who built the High Accuracy Radial Velocity Planet Searcher, better known as HARPS, the spectrograph for ESO's 3.6-metre ...


Magnetic Resonance Now Also Comes In Tiny Quantities

Physics / General Physics

created Sep 29, 2009 | popularity 5 / 5 (6) | comments 0

(PhysOrg.com) -- It is now possible to analyse very small samples using Nuclear Magnetic Resonance. Thanks to a specially constructed detector, a 'stripline', greater sensitivity can be achieved while maintaining the same ...


Polar Crown Prominences

Polar Crown Prominences

Space & Earth / Astronomy

created Sep 18, 2008 | popularity 4.8 / 5 (17) | comments 2

Warning: Material contained in this story may make you wish to become a solar physicist. Japan's Hinode spacecraft, launched in 2006 on a mission to study the sun, is beaming back movies that astonish even ...


Magnetic fields play larger role in star formation than previously thought

Space & Earth / Astronomy

created Sep 09, 2009 | popularity 4.4 / 5 (14) | comments 12

The simple picture of star formation calls for giant clouds of gas and dust to collapse inward due to gravity, growing denser and hotter until igniting nuclear fusion. In reality, forces other than gravity also influence ...


The discovery of new Earths is imminent, UD astronomer says

The discovery of new Earths is imminent, UD astronomer says

Space & Earth / Astronomy

created Sep 28, 2009 | popularity 4 / 5 (16) | comments 4

(PhysOrg.com) -- Harry Shipman, Annie Jump Cannon Professor of Physics and Astronomy at the University of Delaware, told the audience for his lecture, “Seeking New Planets,” on Saturday evening, Sept. 26, ...


With stimulus aid, scientists hope to mimic nature's dynamos

Space & Earth / Earth Sciences

created Oct 09, 2009 | popularity 4.5 / 5 (4) | comments 0

(PhysOrg.com) -- In the cosmos, all celestial objects - planets, stars, galaxies and clusters of galaxies - have magnetic fields. On Earth, the magnetic field of our home planet is most easily observed in a compass where ...



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