heliosphere
noun
he·li·o·sphere
ˈhē-lē-ə-ˌsfir 
-ō-
-ō-
: the region in space influenced by the sun or solar wind
Examples of heliosphere in a Sentence
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Since entering interstellar space, the craft has been studying plasma waves, cosmic rays and magnetic fields in the heliosphere, the immense bubble of solar wind around the solar system.
—
George Petras, USA Today, 25 Nov. 2025
Everything within the solar wind is inside the Sun’s extended atmosphere, known as the heliosphere, which means that, in a sense, Earth orbits through the Sun itself.
—Literary Hub, 27 Oct. 2025
The mission's data will also help scientists map the outer boundary of the heliosphere, the vast bubble around our solar system that's dominated by the sun's solar wind and magnetic field.
—Mike Wall, Space.com, 24 Sep. 2025
One of the theories postulates that the ribbon represents a group of particles that somehow leaked from the heliosphere and bounced around interstellar space before returning to the Solar System.
—Kyle Orland, ArsTechnica, 24 Sep. 2025
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George Petras, USA Today, 25 Nov. 2025
Everything within the solar wind is inside the Sun’s extended atmosphere, known as the heliosphere, which means that, in a sense, Earth orbits through the Sun itself.
—Literary Hub, 27 Oct. 2025
The mission's data will also help scientists map the outer boundary of the heliosphere, the vast bubble around our solar system that's dominated by the sun's solar wind and magnetic field.
—Mike Wall, Space.com, 24 Sep. 2025
One of the theories postulates that the ribbon represents a group of particles that somehow leaked from the heliosphere and bounced around interstellar space before returning to the Solar System.
—Kyle Orland, ArsTechnica, 24 Sep. 2025
See All Example Sentences for heliosphere
Cite this Entry
“Heliosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heliosphere. Accessed 29 Nov. 2025.
Copy CitationKids Definition
heliosphere
noun
he·li·o·sphere
ˈhē-lē-ə-ˌsfir
-ō-
-ō-
: the region of space that is affected by the sun or solar wind
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