magnetosphere
/mæɡˈniːtəsfɪr/
noun
- The region of space around a planet (such as Earth) that is dominated by the planet's magnetic field and protects it from the solar wind.
- Jupiter has the largest magnetosphere of any planet in our solar system.
- Earth's magnetosphere shields us from harmful particles coming from the Sun.
- The aurora borealis occurs when charged particles from the solar wind interact with the magnetosphere.