The region of space dominated by the magnetic field of a star or planet. Earth’s magnetosphere takes on a tear-drop shape under the influence of the flowing solar wind.
The magnetic cavity surrounding a magnetized body, carved out of the passing solar wind by virtue of the magnetic field, which prevents, or at least impedes, the direct entry of the solar wind plasma
into the cavity.
The magnetosphere is a bubble of magnetic fields that surrounds Earth, created by the natural magnetism of the planet. The magnetosphere protects humans on Earth from incoming energy from the sun, how
ever it does change shape and size in response to such space weather, and these fluctuations can degrade communication signals and cause unexpected electrical surges in power grids.
The region of space above the atmosphere orsurface of the planet, and bounded by the magnetopause, that is under thedirect influence of the planet's magnetic field.