magnetosphere
noun
mag·ne·to·sphere
mag-ˈnē-tə-ˌsfir 
-ˈne-
: a region of space surrounding a celestial object (such as a planet or star) that is dominated by the object's magnetic field so that charged particles are trapped in it
Examples of magnetosphere in a Sentence
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On Earth, a powerful magnetic field generated deep within the planet's core creates a vast protective bubble, or magnetosphere, that continuously redirects those particles around the planet.
—
Sharmila Kuthunur, Space.com, 26 May 2026
Bz determines how easily solar energy enters Earth’s magnetosphere.
—Jamie Carter, Forbes.com, 16 May 2026
If our eyes could see it, Jupiter’s magnetosphere would appear bigger than the full moon in the sky!
—Phil Plait, Scientific American, 17 Apr. 2026
The risks are greater when astronauts leave the magnetosphere, a giant invisible magnetic field surrounding the Earth that offers protection against radiation, as in the ARTEMIS II mission.
—Tara Haelle, NPR, 12 Apr. 2026
See All Example Sentences for magnetosphere
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Sharmila Kuthunur, Space.com, 26 May 2026
Bz determines how easily solar energy enters Earth’s magnetosphere.
—Jamie Carter, Forbes.com, 16 May 2026
If our eyes could see it, Jupiter’s magnetosphere would appear bigger than the full moon in the sky!
—Phil Plait, Scientific American, 17 Apr. 2026
The risks are greater when astronauts leave the magnetosphere, a giant invisible magnetic field surrounding the Earth that offers protection against radiation, as in the ARTEMIS II mission.
—Tara Haelle, NPR, 12 Apr. 2026
See All Example Sentences for magnetosphere
Cite this Entry
“Magnetosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnetosphere. Accessed 29 May. 2026.
Copy CitationKids Definition
magnetosphere
noun
mag·ne·to·sphere
mag-ˈnēt-ə-ˌsfi(ə)r
-ˈnet-
: a region of space around an object (as a planet or star) that is dominated by the object's magnetic field
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