photosphere
noun
pho·to·sphere
ˈfō-tə-ˌsfir 
1
: a sphere of light or radiance
2
: the luminous surface layer of the sun or a star
Examples of photosphere in a Sentence
Recent Examples on the Web
The images show ultra-fine bright and dark stripes (called striations) in the thin, gaseous layer of the sun's atmosphere known as the photosphere, according to a statement from the National Solar Observatory (NSO), which operates the solar telescope.
—
Samantha Mathewson, Space.com, 6 June 2025
These features are rooted in the photosphere and stretch outward into the Sun's hot outer atmosphere, known as the corona.
—Joe Edwards, MSNBC Newsweek, 16 May 2025
However, the corona's temperature is around 1.8 million degrees Fahrenheit (1 million degrees Celsius), 150 times hotter than the photosphere.
—Jamie Carter, Forbes.com, 27 Apr. 2025
The sun's corona is always in the sky, but it's overwhelmed by the sun's photosphere, which is a million times brighter.
—Jamie Carter, Forbes.com, 27 Apr. 2025
See All Example Sentences for photosphere
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Samantha Mathewson, Space.com, 6 June 2025
These features are rooted in the photosphere and stretch outward into the Sun's hot outer atmosphere, known as the corona.
—Joe Edwards, MSNBC Newsweek, 16 May 2025
However, the corona's temperature is around 1.8 million degrees Fahrenheit (1 million degrees Celsius), 150 times hotter than the photosphere.
—Jamie Carter, Forbes.com, 27 Apr. 2025
The sun's corona is always in the sky, but it's overwhelmed by the sun's photosphere, which is a million times brighter.
—Jamie Carter, Forbes.com, 27 Apr. 2025
See All Example Sentences for photosphere
Cite this Entry
“Photosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photosphere. Accessed 10 Jun. 2025.
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