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photosphere

photosphere ASTRON

photosphere ASTRON

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For example, coronal holes allow fast-moving plasma to escape from the photosphere, which can effect a local increase in the solar wind speed. en.wikipedia.org

The corona is separated from the photosphere by the relatively shallow chromosphere. en.wikipedia.org

Such a pseudo-photosphere would be significantly cooler than the deeper surface below the outward-moving dense wind. en.wikipedia.org

Observing the variation in width of the penumbra of a sunspot near the limb, he concluded the sunspots were depressions in the generally spherical photosphere. en.wikipedia.org

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