Dictionary

magnetosphere en · NOUN

Pronunciation

• /mæɡˈni.təˌsfɪr/
• (UK) audio

Etymology

Etymology tree Pre-Greekbor.? Ancient Greek Μάγνης (Mágnēs) Ancient Greek μᾰ́γνης (mắgnēs)bor. Old French magnetebor. ▲ Ancient Greek μᾰ́γνης (mắgnēs)bor. Latin magnēsbor. Middle English magnete English magnet English magnet- Ancient Greek -ο- (-o-)der. Latin -o-bor. English -o- English magneto- Ancient Greek σφαῖρᾰ (sphaîră)bor. Latin sphaera Late Latin sphērader. Old French spherebor. Middle English spere English sphere English -sphere English magnetosphere From magneto- + -sphere.

Meanings

1. The comet-shaped region around Earth or another planet in which charged particles are trapped or deflected. Shaped by the solar wind and the planet's magnetic field.
   • Earth is surrounded by a magnetosphere — an invisible bubble of magnetism generated by the powerful churning of molten metals at Earth’s core. It prevents our atmosphere from being stripped away by solar winds blasting it from the sun. While the magnetosphere has been a constant presence for billions of years, its strength waxes and wanes over time. 2023 December 27, Mindy Weisberger, “Ancient bricks baked when Nebuchadnezzar II was king absorbed a power surge in Earth’s magnetic field”, in CNN:
   • We derive rotation periods, photometric activity indices, flaring energies, mass loss rates, gyrochronological ages, X-ray luminosities and consider implications for the planetary magnetospheres and habitability. 2015, D. J. Armstrong, C. E. Pugh, A.-M. Broomhall, D. J. A. Brown, M. N. Lund, H. P. Osborn, D. L. Pollacco, “The Host Stars of Keplers Habitable Exoplanets: Superflares, Rotation and Activity”, in arXiv:
   • One of the earliest (and biggest) space weather events on record occurred in September 1859, when a massive solar eruption crashed into the Earth's magnetosphere, triggering a geomagnetic storm that lasted for days. 2023 November 15, Prof. Jim Wild, “This train was delayed because of bad weather in space”, in RAIL, number 996, page 30:

Forms

Deriveds

magnetospheric

Meronyms

magnetopause · bow shock · magnetotail · paleomagnetosphere · magnetosheath

Translations (22)

ja 磁気圏 (region around a planet) · ko 자기권 (region around a planet) · it magnetosfera (region around a planet) · fi magnetosfääri (region around a planet) · pl magnetosfera (region around a planet) · cs magnetosféra (region around a planet) · gl magnetosfera (region around a planet) · fr magnétosphère (region around a planet) · es magnetosfera (region around a planet) · uk магнітосфе́ра (region around a planet) · eu magnetosfera (region around a planet) · el μαγνητόσφαιρα (region around a planet) · tl balnibulog (region around a planet) · be магнітасфе́ра (region around a planet) · ru магнитосфе́ра (region around a planet) · ca magnetosfera (region around a planet) · cmn 磁氣圈 /磁气圈 (region around a planet) · pt magnetosfera (region around a planet) · vi từ quyển (region around a planet) · de Magnetosphäre (region around a planet) · cmn 磁層 /磁层 (region around a planet) · tr magnetosfer (region around a planet)