auroral proton
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Solar proton event — A Solar proton event occurs when protons emitted by the Sun become accelerated to very high energies either close to the Sun during a solar flare or in interplanetary space by the shocks associated with coronal mass ejections. These high energy… … Wikipedia
Cluster (spacecraft) — Cluster Operator European Space Agency in international collaboration with NASA Major contractors Dornier GmbH (now part of EADS) Mission type Orbiter Satellite of Earth … Wikipedia
geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… … Universalium
2007 in spaceflight — rowspan = 4|10 January, 03:53 GMT [cite web url = http://www.rediff.com/news/2007/jan/10pslv.htm title = All 4 PSLV C7 satellites launched into orbit publisher = Rediff author = T K Rohit date=2007 01 10 accessdate=2008 03 29] rowspan =… … Wikipedia
1981 in spaceflight — |6 January, 12:15 GMT |Soyuz U (R 7 11A511U) |Plesetsk |RVSN |Kosmos 1237 (Zenit 6U) |MOM |LEO |Reconnaissance |20 January 1981 |Successful |9 January, 14:57 GMT |nowrap|Molniya M/ML (R 7 8K78M/ML) |LC 41/1, Plesetsk |RVSN |Molniya 3 14 |MOM… … Wikipedia
ionosphere and magnetosphere — ▪ atmospheric science Introduction regions of Earth s (Earth) atmosphere in which the number of electrically charged particles ions (ion) and electrons (electron) are large enough to affect the propagation of radio waves (electromagnetic… … Universalium
Geomagnetic storm — This article is about disturbances within Earth s magnetosphere. For other uses of magnetic storm , see Magnetic storm (disambiguation). Solar particles interact with Earth s magnetosphere. A geomagnetic storm is a temporary disturbance of the… … Wikipedia
Van Allen radiation belt — Van Allen radiation belts The Van Allen radiation belt is a torus of energetic charged particles (plasma) around Earth, which is held in place by Earth s magnetic field. It is believed that most of the particles that form the belts come from… … Wikipedia
Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… … Universalium
Ionosonde — Beziehung von Ionosphäre und Erdatmosphäre Elektronendichte und Ionenzusammensetzung in den oberen Ionosphärenschichten … Deutsch Wikipedia
Ionosphärenstörung — Beziehung von Ionosphäre und Erdatmosphäre Elektronendichte und Ionenzusammensetzung in den oberen Ionosphärenschichten … Deutsch Wikipedia