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
Recent Examples on the Web
Unlike Earth, the moon doesn’t have a protective atmosphere or magnetosphere, which shields the planet from solar or cosmic particle radiation, NASA says.
—
George Petras, USA TODAY, 29 July 2024
In a chain reaction that began Sunday, a particularly intense coronal mass ejection (CME) has sent ions, which carry a charge, streaming toward Earth from the sun, on a collision course with our own magnetosphere.
—Theresa Braine, New York Daily News, 23 July 2024
For example, unlike Earth, Mars has no magnetosphere, which protects a planet from solar wind and cosmic radiation.
—Sven Bilén, Discover Magazine, 17 July 2024
Earth’s magnetic field may be nearly as old as the Earth itself – and […]
Hard Science
The magnetosphere waxes and wanes every 200 million years
Yes, the magnetosphere is weakening.
—Big Think, 24 June 2024
See all Example Sentences for magnetosphere 
George Petras, USA TODAY, 29 July 2024
In a chain reaction that began Sunday, a particularly intense coronal mass ejection (CME) has sent ions, which carry a charge, streaming toward Earth from the sun, on a collision course with our own magnetosphere.
—Theresa Braine, New York Daily News, 23 July 2024
For example, unlike Earth, Mars has no magnetosphere, which protects a planet from solar wind and cosmic radiation.
—Sven Bilén, Discover Magazine, 17 July 2024
Earth’s magnetic field may be nearly as old as the Earth itself – and […]
Hard Science
The magnetosphere waxes and wanes every 200 million years
Yes, the magnetosphere is weakening.
—Big Think, 24 June 2024
See all Example Sentences for magnetosphere
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'magnetosphere.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Magnetosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnetosphere. Accessed 19 Aug. 2024.
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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