Etymology
Advertisement

magnetosphere (n.)

coined 1959, from magneto- + sphere. So called because it is the region around the earth (and some other planets) in which the magnetic field of the planet plays a dominant role in the motion of particles.

Others are reading

Advertisement
Advertisement
Definitions of magnetosphere

magnetosphere (n.)
the magnetic field of a planet; the volume around the planet in which charged particles are subject more to the planet's magnetic field than to the solar magnetic field;
From wordnet.princeton.edu