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Latest Magnetosphere Stories

Magnetic Fields Created Before Stars In The Early Universe
2013-01-02 13:13:56

Lee Rannals for redOrbit.com — Your Universe Online An astronomer wrote in the journal Physical Review Letters about a new mechanism for the magnetization of the early universe. Before stars formed, luminous matter consisted only of fully ionized gas of protons, electrons, helium nuclei and lithium nuclei which were produced during the Big Bang. “All higher metals, for example, magnetic iron could, according to today´s conception, only be formed in the inside of...

Solar Winds May Be Warmed By Turbulent Plasma
2012-12-19 10:43:11

Watch the video "Simulated Vision of Solar Wind Turbulence" April Flowers for redOrbit.com - Your Universe Online Scientists have zoomed in on solar wind to reveal the finest detail yet using the European Space Agency's (ESA) Cluster quartet of satellites as a space plasma microscope. They found tiny turbulent swirls that could play a big role in heating the winds. The fact that these winds stay hotter than they current models predict has been a long-standing puzzle in solar physics...

Concordia Is Opening The Curtains
2012-11-05 09:47:32

ESA Set against a star-studded backdrop and a splash of the Milky Way, the green glow of an auroral curtain pervades the permanently dark winter skies of the South Pole. The only sign of life here is the Concordia research station that ESA uses to prepare for future long-duration missions beyond Earth. The site also caters to scientific research from geology and glaciology to climate change, astronomy and planetary magnetic fields. Even though the Sun barely peeks above the horizon...

Earth’s Magnetosphere Operates Like A Filter
2012-10-24 11:46:18

ESA´s quartet of satellites studying Earth´s magnetosphere, Cluster, has discovered that our protective magnetic bubble lets the solar wind in under a wider range of conditions than previously believed. Earth´s magnetic field is our planet´s first line of defense against the bombardment of the solar wind. This stream of plasma is launched by the Sun and travels across the Solar System, carrying its own magnetic field with it. Depending on how the solar wind´s...

Rapid Changes In The Earths Core
2012-10-23 05:44:09

Lee Rannals for redOrbit.com - Your Universe Online Scientists writing in the journal Proceedings of the National Academy of Sciences (PNAS) said the magnetic gravity fields of Earth are going through some changes. Earth's magnetic field is generated by flows of liquid iron in the outer core. The Earth's magnetic field protects us from cosmic radiation particles. By understanding these processes in the outer core, scientists are able to have a better grasp of the terrestrial shield....

Probes To Study Van Allen Radiation Belts
2012-08-20 04:36:03

Video: The Radiation Belt Storm Probe Lee Rannals for redOrbit.com - Your Universe Online NASA will be launching its Radiation Belt Storm Probes (RBSP) mission from Kennedy Space Center in Florida this Friday, August 24. The launch was delayed by 24 hours overnight Sunday due to an anomalous engine condition that was identified during testing of another Atlas vehicle at the Factory in Decatur, Ala. According to NASA's website, "the delay will allow additional time for engineers...

New Program Aims To Advance Scientific Understand Of Sun and Space Weather
2012-08-16 06:47:12

April Flowers for redOrbit.com - Your Universe Online A new report from the National Research Council lays out four scientific goals for the next 10 years along with guiding principles and recommended actions. The prioritized program of basic and applied research for 2012-2022 is meant to advance scientific understanding of the sun, sun-Earth connections, the origins of space weather, and the sun's interactions with other bodies in the solar system. This second decadal survey is the...

Cluster Examines Thin Current Sheets In The Magnetosphere
2012-08-02 05:08:15

April Flowers for redOrbit.com - Your Universe Online The Universe is filled with plasma, a charged gas consisting of ions and electrons. Thin sheets, or boundaries, with currents separate large plasma regions. These boundaries are where most of the exciting action in space happens. Scientists at the Swedish Institute of Space Physics (IRF) have measured the fundamental properties of one of the waves mixing and accelerating plasmas within these sheets. These thin current sheets are...

Waves In The Magnetosphere's Thin Boundaries Looked At By Cluster
2012-08-01 16:08:16

Exploiting a favorable configuration of ESA's Cluster mission spacecraft, scientists have detected and characterized lower hybrid drift waves, a special kind of plasma waves that develop in thin boundaries both in space and in the laboratory. The measurement of fundamental properties of these waves was possible when two of the spacecraft were flying very close to one another in the tail of Earth's magnetosphere. With wavelengths of about 60 km, these waves appear to play an important role in...

Solar Winds Affect Earth's Magnetosphere
2012-08-01 13:04:29

April Flowers for redOrbit.com — Your Universe Online Weather has always affected our lives, but we are increasingly reliant on technology that can be disrupted by space weather. Geomagnetic storms, which are major disturbances of the magnetosphere, cause high altitude flights to be rerouted, costing many thousands of dollars per flight; cause GPS errors of up to 151 feet; and affect the International Space Station and satellites. Geomagnetic storms and other space weather...


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...

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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...

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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...

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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
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'karpos', fruit.
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