Science glossary film: Corona

Corona

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The outer atmosphere of the sun. A thin, extremely hot plasma - over a million degrees celsius, compared to around 6000 degrees for the visible surface.

The outer atmosphere of the Sun. A thin, extremely hot plasma over 1,000,000°C, compared to around 6000°C for the visible surface. It generally becomes visible from Earth only during a total solar eclipse. The Sun's corona is not evenly distributed, being concentrated in some places but almost absent in others due to the Sun's magnetic field.

It generally becomes visible from Earth only during a total solar eclipse. The Sun's corona is not evenly distributed, being concentrated in some places but almost absent in others due to the Sun's magnetic field.

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