News tagged with earths magnetic

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

Apr 23, 2009 | 4.7 / 5 (41) | 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 ...

The Earth's magnetic field remains a charged mystery

Space & Earth / Earth Sciences

Jun 15, 2009 | 4.7 / 5 (26) | 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 ...

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

Space & Earth / Earth Sciences

Dec 16, 2008 | 4.5 / 5 (20) | 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

Space & Earth / Earth Sciences

Aug 28, 2008 | 4.3 / 5 (19) | 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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Animal magnetism provides a sense of direction

Biology /

Feb 27, 2008 | 4 / 5 (11) | 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 ...

Europium discovery: New element found to be a superconductor

Physics / Condensed Matter

May 13, 2009 | 3.5 / 5 (17) | 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

Oct 19, 2009 | 4.9 / 5 (27) | 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 ...

Birds 'See' Earth's Magnetic Field

Biology / Plants & Animals

Nov 16, 2009 | 4.4 / 5 (8) | 2

When birds migrate over long distances -- sometimes thousands of miles -- they usually end up in exactly the same place year after year. Such accurate feats of navigation, accomplished by millions of birds ...

Superior Super Earths

Space & Earth / Space Exploration

Nov 30, 2009 | 4.7 / 5 (46) | 14

Super Earths are named for their size, but these planets - which range from about 2 to 10 Earth masses - could be superior to the Earth when it comes to sustaining life. They could also provide an answer to ...

Magnetic Resonance Now Also Comes In Tiny Quantities

Physics / General Physics

Sep 29, 2009 | 5 / 5 (6) | 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

Space & Earth / Astronomy

Sep 18, 2008 | 4.8 / 5 (17) | 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 ...

Multiferroic compounds used to produce smaller and cheaper digital memories

Physics / Condensed Matter

Nov 27, 2009 | 4.7 / 5 (6) | 1

(PhysOrg.com) -- Is it possible to make even more compact digital memories for portable electronic devices and which consume even less energy? A team of French researchers has recently demonstrated that it ...