magnetosphere
magnetosphere — noun
1. The area around a planet where the planet's own magnetic field is strong enough
The area around a planet where the planet's own magnetic field is strong enough to control the behaviour of electrically charged particles, rather than letting them be swept away by the stream of particles coming from the Sun.
Earth's magnetosphere protects our planet from the harmful radiation carried by the solar wind.
possessive: Earth's magnetosphere + protect + solar wind
Padma and her team at the geophysics lab are studying how the magnetosphere changes during periods of intense solar activity.
When particles from the Sun enter the magnetosphere near the North and South Poles, they create the colourful northern lights.
Without its magnetosphere, Earth would gradually lose its atmosphere because the solar wind would strip the gas away.
The spacecraft was designed to measure changes in the strength of Jupiter's magnetosphere as it orbits the giant planet.
文法句型
[possessive noun] + magnetosphere
the + magnetosphere + of + [planet]
用法筆記
Frequently used with the possessive form of a planet's name (Earth's magnetosphere, Jupiter's magnetosphere) to specify which planet's magnetic region is being discussed. In scientific contexts, 'magnetosphere' applies to any planet with a strong enough internal magnetic field — Mercury, Earth, Jupiter, Saturn, Uranus, and Neptune all have one.