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magnetosphere

[ mag-nee-tuh-sfeer ]

noun

Astronomy.
  1. the outer region of the earth's ionosphere, where the earth's magnetic field controls the motion of charged particles, as in the Van Allen belts. Compare magnetopause.
  2. such a region of another planet:

    Jupiter's magnetosphere.



magnetosphere

/ mæɡˌniːtəʊˈsfɛrɪk; mæɡˈniːtəʊˌsfɪə /

noun

  1. the region surrounding a planet, such as the earth, in which the behaviour of charged particles is controlled by the planet's magnetic field
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

magnetosphere

  1. A highly asymmetrical region surrounding the Earth, beginning about 100 km (62 mi) above the surface on the side of the Earth facing the Sun and extending hundreds of thousands of kilometers into space on the opposite side. In this region the Earth's magnetic field exerts a significant influence on any charged particles that encounter it. The magnetosphere deflects most of the charged particles in the solar wind , but also traps and deflects some of these particles toward the Earth's magnetic poles, causing magnetic storms and auroras .
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Derived Forms

  • magnetospheric, adjective
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Other Word Forms

  • ·Ա·ٴ·· [mag-nee-t, uh, -, sfer, -ik], adjective
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Word History and Origins

Origin of magnetosphere1

First recorded in 1955–60; magneto- + -sphere
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Example Sentences

Examples have not been reviewed.

Electrically charged particles fly from our neighborhood star into Earth's magnetosphere, where a powerful magnetic field surrounds our planet.

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The researchers propose a different explanation for the current theory, suggesting that nitrogen molecular ions might be accelerated into the magnetosphere through an unknown process.

From

While scientists expected to see this same ionization near the Uranus moons, they were surprised to see a “vacuum magnetosphere” with no water ions.

From

Combined with flares, they can create solar storms that interact with Earth's magnetic field or magnetosphere.

From

The study provides an initial assessment of sensitivity for satellite-based detectors in low Earth orbit and ongoing missions within Jupiter's magnetosphere.

From

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