chromosphere

American  

[kroh-muh-sfeer] / ˈkroʊ məˌsfɪər /

noun

Astronomy.

1. a scarlet, gaseous envelope surrounding the sun outside the photosphere, from which enormous quantities of hydrogen and other gases are erupted.

2. a gaseous envelope surrounding a star.

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chromosphere British  

/ ˈkrəʊməˌsfɪə, ˌkrəʊməˈsfɛrɪk /

noun

1. a gaseous layer of the sun's atmosphere extending from the photosphere to the corona and visible during a total eclipse of the sun

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chromosphere Scientific  

/ krō′mə-sfîr′ /

1. A glowing, transparent layer of gas surrounding the photosphere of a star. The Sun's chromosphere is several thousand kilometers thick, is composed mainly of hydrogen at temperatures of 6,000° to 20,000°K, and gives off reddish light.

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Other Word Forms

• chromospheric adjective

Etymology

Origin of chromosphere

First recorded in 1865–70; chromo- + -sphere

Example Sentences

And last month the agency released the first-ever full-disk images of the Sun in wavelengths ranging from 200 to 400 nanometres, saying they provided "insights into the intricate details of the Sun's photosphere and chromosphere".

From BBC

The spacecraft is equipped with seven payloads to study the sun’s corona, chromosphere, photosphere and solar wind, the Indian Space Research Organization said.

From Seattle Times

“We saw the material moving out through the chromosphere in the south in September to November 2019,” Dr. Dupree wrote in an email.

From New York Times

The hot, outer layers of its atmosphere known as the chromosphere appeared to be missing.

From Scientific American

Mariona Badenas, 25, of Spain, walked past, heading for the observatory, where a special telescope allows her to look at the sun’s chromosphere, or second layer of atmosphere.

From Los Angeles Times