Quantcast

Latest Geomagnetism Stories

Understanding The Magnetosphere Better Than Ever With Help From THEMIS
2013-02-20 10:47:18

NASA On Earth, scientists can observe weather patterns, and more importantly can predict them, through the use of tens of thousands of weather observatories scattered around the globe. Up in the space surrounding Earth -- a space that seethes with its own space weather made of speeding charged particles and constantly changing magnetic fields that can impact satellites — there are only a handful of spacecraft to watch for solar and magnetic storms. The number of observatories has...

CREPT Instrument Used To Study The Radiation Belts
2013-02-15 12:56:58

NASA A smaller version of an instrument now flying on NASA´s Van Allen Probes has won a coveted spot aboard an upcoming NASA-sponsored Cubesat mission – the perfect platform for this pint-size, solid-state telescope. Weighing just 3.3 pounds, the Compact Relativistic Electron and Proton Telescope (CREPT) will “augment the science of a major flagship mission” and demonstrate the effectiveness of two new technologies that make the instrument four times faster than...

UN Prepares For Stormy Space Weather
2013-02-14 11:00:47

NASA Science Rewind to the late 1950s. The Soviet Union had just launched the first artificial satellite, Sputnik. The United States, caught short, was scrambling to catch up, kick-starting a Cold War space race that would last for decades. Space was up for grabs, and it seemed like anything could happen. Into this void stepped the United Nations. In 1958, the General Assembly "recognizing the common interest of mankind in furthering the peaceful use of outer space ... and desiring to...

Earth-Directed CME Released Associated With A Long Duration Solar Flare
2013-02-11 08:01:42

NASA On Feb. 9, 2013 at 2:30 a.m. EST, the sun erupted with an Earth-directed coronal mass ejection or CME, associated with a long duration C2.4-class flare. Experimental NASA research models, based on observations from the Solar Terrestrial Relations Observatory (STEREO) and ESA/NASA´s Solar and Heliospheric Observatory, show that the CME left the sun at speeds of around 500 miles per second, which is a fairly typical speed for CMEs. Historically, CMEs at this speed are usually...

Salmon Use Magnetic Maps To Navigate Home
2013-02-08 10:14:44

April Flowers for redOrbit.com - Your Universe Online A new analysis of over 56 years of data has revealed that sockeye salmon use a magnetic map to return to their spawning grounds after years at sea. The findings of this study were published online in the journal Current Biology. "To find their way back home across thousands of kilometers of ocean, salmon imprint on the magnetic field that exists where they first enter the sea as juveniles," said Nathan Putman of Oregon State...

Experts Say Solar Superstorm May Be Imminent: Readiness Is Key
2013-02-08 09:29:17

[Watch Video: Solar Superstorm] Lawrence LeBlond for redOrbit.com - Your Universe Online A solar superstorm may be brewing and there is little we can do to prevent it from disrupting our communications and electrical systems here on Earth. But there is more we can do to prepare for such an event, according to a new report by the Royal Academy of Engineering. Authors of the study said the UK should plan to mitigate the effects of a potentially dangerous solar storm now before...

New Rocket Project Aims To Study Auroral Wind Of Northern Lights
2013-02-01 13:41:57

Lawrence LeBlond for redOrbit.com - Your Universe Online For many in the extreme upper latitudes of the Northern Hemisphere, the Aurora borealis (better known as the Northern Lights) offer breathtaking displays of color and lights, dancing effortlessly across the night sky. These lights, which are caused by solar winds bouncing off the Earth´s upper atmosphere, are typically visible only around the Polar ℠auroral zone´ due to the strong magnetic forces around this region....

Is Oxygen's Role In Core Formation Underestimated?
2013-01-11 09:37:25

redOrbit Staff & Wire Reports - Your Universe Online The Earth´s core formed under more oxidizing conditions than previously believed, claims a new study published in Thursday´s edition of the journal Science Express. Lawrence Livermore National Laboratory (LLNL) geophysicist Rick Ryerson and an international team of colleagues made the discovery following a series of laser-heated diamond anvil cell experiments at high pressure (350,000 to 700,000 atmospheres) and...

NASA Cluster Mission Sheds Light On Mysteries Of Solar Winds
2013-01-09 14:42:24

Brett Smith for redOrbit.com - Your Universe Online Data collected from the European Space Agency´s (ESA) Cluster Mission showed for the first time how turbulence within solar wind can create a warming effect as the charged particles travel away from the sun. The solar wind is formed by electrically charged plasma being ejected from the sun´s super hot atmosphere. According to a new report in the new issue of Physical Review Letters based on Cluster data, very small...


Latest Geomagnetism Reference Libraries

0_4589a7dfab720aab9585b8283e12d5f2
2010-10-21 16:58:49

The compass is a tool that helps the user navigate using the Earth's magnetic poles by using a magnetized pointer that reacts to magnetic fields. Since a compass can be used to calculate a heading it quickly improved the safety and efficiency of travel, especially ocean travel. It has only recently been replaced by Global Positioning Systems. It works by indicating the direction of the magnetic north of a planet's magnetosphere. Generally the face of a compass highlights the north, south,...

Ring Current
2004-10-19 04:45:44

Ring Current -- A ring current is an electric current carried by charged particles trapped in a planet's magnetosphere. It is caused by the longitudinal drift of energetic (10-200 keV) particles. Earth's Ring Current Earth's ring current is responsible for geomagnetic storms. The ring current system consists of a band, at a distance of 3-5 RE(1), which lies in the equatorial plane and circulates clockwise around the Earth (when viewed from the north). The particles of this region...

4_58d180de6d0f28286cf3bc85a49cb91c2
2004-10-19 04:45:41

Van Allen Radiation Belt -- The Van Allen radiation belt is a torus of energetic charged particles around Earth, trapped by Earth's magnetic field. The presence of a radiation belt had been theorized prior to the Space Age and the belt's presence was confirmed by the Explorer I on January 31, 1958 and Explorer III missions, under Doctor James Van Allen. The trapped radiation was first mapped out by Explorer IV and Pioneer III. Qualitatively, it is useful to view this belt as consisting...

More Articles (3 articles) »
Word of the Day
cock-a-hoop
  • Exultant; jubilant; triumphant; on the high horse.
  • Tipsy; slightly intoxicated.
This word may come from the phrase 'to set cock on hoop,' or 'to drink festively.' Its origin otherwise is unclear. A theory, according to the Word Detective, is that it's a 'transliteration of the French phrase 'coq a huppe,' meaning a rooster displaying its crest ('huppe') in a pose of proud defiance.' Therefore, 'cock-a-hoop' would 'liken a drunken man to a boastful and aggressive rooster.'
Related