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magnetosphere |
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magnetosphere: see Van Allen radiation belts Van Allen radiation belts, two belts (sometimes considered as a single belt of varying intensity) of radiation outside the earth's atmosphere, extending from c.400 to c.40,000 mi (c.650–c.65,000 km) above the earth. ..... Click the link for more information. . magnetosphereRegion around a planet (such as Earth) or a natural satellite that possesses a magnetic field (see geomagnetic field) where magnetic phenomena and the high atmospheric conductivity caused by ionization strongly influence the behaviour of charged particles (see electric charge). A planet or moon's magnetic field, like its gravitational field, becomes weaker with distance from the body. The solar wind sweeps a body's magnetosphere out away from the Sun in a “tail” trailing well beyond it. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Stretching millions of kilometers in the opposite direction behind the Earth is the magnetotail. Together, the two probes will seek to reveal how the so-called magnetotail stores energy from the sun and later discharges it, in part by generating auroras. During its first year of operation, the craft will explore distant segments, including the elongated, comet-shaped field known as the magnetotail. |
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