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 chromosphere is cooler and less dense than the photosphere, with a temperature around 7,200 F (4,000 C).
—
Ryan French, Space.com, 22 July 2025
Spacecraft studied solar chromosphere For the latest mission from White Sands, a Black Brant IX sounding rocket carried new technology to study the sun's mysterious chromosphere, located between the sun's visible surface, known as the photosphere, and its outer layer, the corona.
—Eric Lagatta, USA Today, 21 July 2025
The Mystery Of The Solar Corona One of the main objectives of the mission is to understand why the sun’s corona, its outer atmosphere, is a million times hotter than the photosphere, its surface.
—Jamie Carter, Forbes.com, 19 June 2025
The sun's photosphere, its surface, is about 10,000 degrees Fahrenheit (5,500 degrees Celsius), but the corona is two million degrees Fahrenheit (over 1,1 million degrees C) — about 200 times hotter.
—Jamie Carter, Space.com, 16 June 2025
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Ryan French, Space.com, 22 July 2025
Spacecraft studied solar chromosphere For the latest mission from White Sands, a Black Brant IX sounding rocket carried new technology to study the sun's mysterious chromosphere, located between the sun's visible surface, known as the photosphere, and its outer layer, the corona.
—Eric Lagatta, USA Today, 21 July 2025
The Mystery Of The Solar Corona One of the main objectives of the mission is to understand why the sun’s corona, its outer atmosphere, is a million times hotter than the photosphere, its surface.
—Jamie Carter, Forbes.com, 19 June 2025
The sun's photosphere, its surface, is about 10,000 degrees Fahrenheit (5,500 degrees Celsius), but the corona is two million degrees Fahrenheit (over 1,1 million degrees C) — about 200 times hotter.
—Jamie Carter, Space.com, 16 June 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 29 Jul. 2025.
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