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Latest Magnetosphere Stories

992a8013d06f072cb57f643068940aaf1
2009-05-28 10:36:04

Using data from NASA's THEMIS mission, a team of University of Alberta researchers has pinpointed the impact epicenter of an earthbound space storm as it crashes into the atmosphere, and given an advance warning of its arrival. The team's study reveals that magnetic blast waves can be used to pinpoint and predict the location where space storms dissipate their massive amounts of energy. These storms can dump the equivalent of 50 gigawatts of power, or the output of 10 of the world's largest...

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2009-04-29 08:55:00

Scientists have found that extreme solar activity drastically compresses the magnetosphere and modifies the composition of ions in near-Earth space. They are now looking to model how these changes affect orbiting satellites, including the GPS system. The results were obtained from coordinated in-situ measurements performed by ESA's four Cluster satellites along with the two Chinese/ESA Double Star satellites. Under normal solar conditions, GPS satellites orbit within the...

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2009-04-09 15:45:00

Keeping an unsleeping eye on the phenomena that cause the aurora An international scientific consortium has successfully developed a series of autonomous observatories in Antarctica that for the first time provide critical year-round "space weather" data from the Earth's harshest environment. Recently, data from these observatories were used in conjunction with the National Aeronautics and Space Administration's array of THEMIS satellites to reveal new information about magnetospheric...

2009-02-10 12:47:09

The European Space Agency says it is extending the operations of its Mars Express, Venus Express and Cluster missions until at least Dec. 31. The ESA said the Mars Express spacecraft, launched in 2003, has produced breathtaking, high-resolution images of the planet's surface in 3-D and in color. The spacecraft, carrying the first radar instrument flown to Mars, was also the first spacecraft to detect methane in the planet's atmosphere from orbit. The Mars Express mission has been extended...

b9303e2409470a8e267777b56b9d3e231
2009-01-15 07:55:00

For the first time, it has been possible to quantify the amount of hydrogen naturally escaping each year from the Earth's atmosphere. This hydrogen outflow has been shown to be of the order of thousands of tons. The result was obtained by applying a new analytical method to a unique set of electric field data collected by the European Space Agency's Cluster mission. The escaping hydrogen has previously been invisible to classical particle detectors on satellites due to its very low energy....

577070ce410a9f8e4c95aa901c40e40d1
2008-12-17 10:10:00

Researchers announced on Thursday that current satellite surveillance has exposed the biggest breach ever seen in the magnetic field that shields the Earth from the majority of the sun's aggressive rays. The unearthing was found last summer by Themis, a group of five NASA satellites. Scientists have known for a long time that the Earth's magnetic field, which protects us from harsh space weather, is comparable to an older home lets in brutal eruptions of charged particles from the sun. This...

2008-12-16 13:20:00

GREENBELT, Md., Dec. 16 /PRNewswire-USNewswire/ -- 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. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) "The discovery overturns a long-standing belief about how and when most of the solar particles penetrate Earth's magnetic field, and could be used to...

1637e26276c71a956f82ce9906d24e8e1
2008-12-16 15:40:00

NASA's five THEMIS spacecraft have discovered a breach in Earth's magnetic field ten times larger than anything previously thought to exist. Solar wind can flow in through the opening to "load up" the magnetosphere for powerful geomagnetic storms. But the breach itself is not the biggest surprise. Researchers are even more amazed at the strange and unexpected way it forms, overturning long-held ideas of space physics. "At first I didn't believe it," says THEMIS project scientist David Sibeck...

9a2590b463d35d9e460e74e3b278a8e81
2008-12-13 16:20:00

A detailed analysis of the measurements of five different satellites has revealed the existence of the warm plasma cloak, a new region of the magnetosphere, which is the invisible shield of magnetic fields and electronically charged particles that surround and protect Earth from the onslaught of the solar wind. The study was conducted by a team of scientists headed by Charles "Rick" Chappell, research professor of physics and director of the Dyer Observatory at Vanderbilt University and...

ab2d70c1d8f380b633978ac56b80a86e1
2008-12-12 13:21:44

Members of the MESSENGER science team will present a range of new findings from the spacecraft's studies of the planet Mercury during the American Geophysical Union (AGU) Fall Meeting next week in San Francisco. "The principal goal of the MESSENGER mission is to gather global observations of Mercury from orbit about the planet, beginning in 2011, but our first two flybys produced a wonderful abundance of new information about the least known of our sister planets," says MESSENGER Principal...


Latest Magnetosphere Reference Libraries

Planetary and Space Science
2012-05-28 10:21:45

Planetary and Space Science is a peer-reviewed scientific journal established in 1959 and published by Elsevier 15 times per year. As of May 2012, the editor-in-chief is Rita Schulz (The Netherlands). The journal publishes original research articles and short communications. The main focus is on solar system processes which encompass multiple areas of the natural sciences. Research that involves planetary and space sciences involves many disciplines. Celestial mechanics is part of these...

45_7760ecc1c46f19cc327f8ce6904b6250
2013-03-16 00:00:00

Hannes Olof Gösta Alfvén (May 30, 1908 - April 2, 1995) was a Swedish plasma physicist born in Norrköping, Sweden. Alfvén received his PhD from the University of Uppsala in 1934. His thesis was titled "Investigations of the Ultra-short Electromagnetic Waves." He was originally trained as an electrical power engineer and later moved on to research and teaching in the fields of plasma physics. Alfvén made many contributions to plasma physics, including theories describing the...

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...

6_02132514ceb20be8f009384c891c09472
2004-10-19 04:45:41

Heliopause -- The heliopause is the boundary where our Sun's solar wind is stopped by the interstellar medium. The solar wind blows a "bubble" in the interstellar medium (the rareified hydrogen and helium gas that permeates the galaxy). The point where the solar wind's strength is no longer great enough to push back the interstellar medium is known as the heliopause, and is often considered to be the outer "border" of the solar system. The distance to the heliopause is not precisely...

6_7a298dad9db3084ba8f1dbe9ba6be2442
2004-10-19 04:45:41

Aurora -- The Polar Aurora are natural displays of light in the sky that can be seen with the unaided eye only at night. An auroral display in the Northern Hemisphere is called the aurora borealis, or the northern lights; in the Southern Hemisphere it is called the aurora australis. Auroras are the most visible effect of the sun's activity on the earth's atmosphere. The beautiful and often eerie curtains of light in the night time sky have been observed by people for millennia. An aurora...

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Word of the Day
cenobite
  • One of a religious order living in a convent or in community; a monk: opposed to anchoret or hermit (one who lives in solitude).
  • A social bee.
This word comes from the Latin 'coenobium,' convent, which comes from the Greek 'koinobios,' living in community.
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