noun. 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.
- magnetic field
- -sphere (English)
- magneto- (English)
- -o- (English)
Example sentences of the word magnetosphere
When the particles strike the Earth’s magnetosphere, they can produce an electrical charge, one strong enough to reach the surface of the planet.
2. Noun, singular or mass
Due to the effects of the solar wind, the magnetosphere has a compressed, bulbous side that faces the sun, a dip near Earth's poles and a flowing tail extending away from the sun.
Interaction of the solar wind with the magnetosphere causes the northern and southern lights known as the Aurora Borealis and Aurora Australis.
4. Noun, plural
Astronauts traveling outside the magnetosphere have to be protected from solar radiation.
5. Proper noun, singular
This event shows that the magnetosphere plays an active role in limiting depletion of the atmosphere.