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Latest Magnetosphere Stories

Space Weather Shielding Provided By Plasma Plumes
2014-03-07 05:41:48

April Flowers for redOrbit.com - Your Universe Online The magnetosphere, Earth's magnetic field, stretches from the core of the planet out into space. Here, the magnetosphere meets the solar wind, a stream of charged particles emitted by the sun. The magnetosphere, for the main part, acts to shield the Earth from this high-energy solar activity. When the Earth's magnetosphere comes into contact with the sun's magnetic field in a process called "magnetic reconnection," the Earth's...

Space Weather Around Venus Is Harsher Than That Around Earth
2014-02-21 14:01:57

[ Watch the Video: What's Causing Crazy Weather On Venus? ] Lee Rannals for redOrbit.com - Your Universe Online According to a study published in the Journal of Geophysical Research, space weather around Venus is much harsher than what is experienced around Earth. Scientists have discovered that the space weather around Venus can have such large explosions that they are bigger than the entire planet. They also said that these giant explosions can happen multiple times per day....

van allen probes
2013-12-21 04:46:57

April Flowers for redOrbit.com - Your Universe Online Data from NASA's Van Allen Probes mission has helped researchers resolve decades of scientific uncertainty over the origin of ultra-relativistic electrons in Earth's near space environment. The findings, published in Nature, are likely to influence our understanding of planetary magnetospheres throughout the universe. One of the primary science objectives of the Van Allen Probes is to understand the processes that control the...

Decades-old Mystery In Earth's Upper Atmosphere Solved
2013-12-18 14:51:49

University of California - Los Angeles New research published in the journal Nature resolves decades of scientific controversy over the origin of the extremely energetic particles known as ultra-relativistic electrons in the Earth's near-space environment and is likely to influence our understanding of planetary magnetospheres throughout the universe. Discovering the processes that control the formation and ultimate loss of these electrons in the Van Allen radiation belts — the rings...

NASA's Juno Spacecraft Offers A 'Star Trek' View Of Earth, Moon
2013-12-10 15:19:10

[ Watch the video: Earth and Moon Seen by Passing Juno Spacecraft ] Lee Rannals for redOrbit.com - Your Universe Online When NASA’s Juno spacecraft flew past Earth earlier this fall it provided a one-of-a-kind view of our planet and the moon. Juno flew past Earth on October 9, giving it an 8,000 mile-per-hour boost to help it with its journey to Jupiter. During the flyby, Juno traveled about twice as fast as a typical satellite and was spinning at a rate of about two revolutions...

Earth's Van Allen Belts Thrust Particles To Near The Speed Of Light
2013-12-04 14:38:49

Lee Rannals for redOrbit.com - Your Universe Online NASA’s twin Van Allen Probes have led to another new discovery of Earth’s mysterious radiation belts. Researchers used data from the NASA spacecraft to reveal that the high-energy particles populating the Van Allen radiation belts can be accelerated to nearly the speed of light. This finding comes on the heels of a related discovery showing similar particle acceleration but on a microscopic, rather than planetary, scale. “The...

Juno Flies By Earth On Way To Jupiter
2013-10-08 13:39:54

[ Watch the Video: Juno Spacecraft Earth Flyby Animation ] Lee Rannals for redOrbit.com - Your Universe Online It may seem counter-intuitive to launch a spacecraft on a path that intercepts Earth's orbit, but believe-it-or-not, scientists say it was the best route to Jupiter. On Wednesday, NASA's Juno mission will be passing within about 350 miles of Earth's surface, which will be the closest it's been to our planet since leaving it in August 2011. This technique is similar to a...

Space Weather Origins Revealed
2013-09-27 04:21:43

[ Watch the Video: What Really Causes Space Weather? ] redOrbit Staff & Wire Reports - Your Universe Online Research published in Friday’s issue of the journal Science looks to shed new light on how changing environmental conditions in near-Earth space known as “space weather” can occur. Space weather is caused by solar storms – powerful eruptions of solar material and magnetic fields into interplanetary space – and can interfere with wireless communication and GPS...

The Cluster constellation
2013-09-12 05:02:16

[ Watch the Video: Earth’s Plasmasphere and the Van Allen Belts ] April Flowers for redOrbit.com - Your Universe Online For more than half a century, the invisible bubble created by Earth's magnetic field - the magnetosphere - has been studied by space missions. The discovery of Earth's radiation belts in 1958 was one of the first scientific breakthroughs made by a spacecraft. The Explorer 1 satellite revealed two concentric, tire-shaped belts of highly energetic (0.1–10 MeV)...

Several Key Discoveries During Van Allen Probes’ First Year
2013-09-01 07:49:38

redOrbit Staff & Wire Reports – Your Universe Online NASA’s twin Van Allen Probes entered their second year of service Friday having already provided a wealth of new information about the layers of energetic charged particles located above our planet. According to the US space agency, data collected by the probes since their August 30, 2012 launch has already led to “several significant discoveries” about the Van Allen radiation belts -- some of which came within the first...


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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