Thursday, September 6, 2012

Corona (Plural: Coronae) - Definition

Corona (Plural: Coronae)

The uppermost level of a star's atmosphere. In the sun, the corona is characterized by low densities and high temperatures (> 1,000,000 degrees K).

The luminous plasma atmosphere of the Sun or other star, extending millions of kilometres into space, most easily seen during a total solar eclipse.

Source: wikipedia, NASA

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