http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. 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 of charged particles (made up of electrons and protons). New research raises question marks about the forces behind the magnetic field and the structure of Earth itself. http://www.physorg.com/news164253692.html Space & Earth Mon, 15 Jun 2009 03:01:55 EST news164253692 (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 rock contains magnetite, and when the rock cools, its magnetic properties are frozen, recording the Earth's magnetic field of the time. With this data, scientists estimate that the last magnetic field reversal occurred about 780,000 years ago. http://www.physorg.com/news159704651.html Physics Thu, 23 Apr 2009 11:24:39 EST news159704651 (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 NASA and the National Science Foundation. http://www.physorg.com/news148665600.html Space & Earth Tue, 16 Dec 2008 16:00:00 EST news148665600 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 out that the Earth`s own magnetic field is accelerating the oxygen away. http://www.physorg.com/news139154071.html Space & Earth Thu, 28 Aug 2008 14:54:31 EST news139154071