The Sun

"The star the Earth orbits,"

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The Corona

An aura of plasma that surrounds the sun and other celestial bodies. The Sun's corona extends millions of kilometers into space and is best seen during a solar eclipse.

The Chromosphere

Light from the chromosphere is usually too weak to be seen against the brighter photosphere. The chromosphere is also best seen during a solar eclipse.

The Photosphere

The photosphere is visible surface of the Sun that we are most familiar with. Since the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick.

The Convection Zone

With a depth of 200,000 km up to the visible surface of the Sun. Energy is transported by convection in this area. The surface of the convection zone is where light is created.

The Radiation Zone

The radiation zone, is layer of a star's interior where energy is primarily transported toward the exterior by means of radiative diffusion and thermal conduction, rather than by convection.

The Suns Core

The Core of the Sun is the central region where nuclear reactions consume hydrogen


Temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions.

Solar Prominence

A large, bright feature extending outward from the Sun's surface. Also anchored to the Sun's surface in the photosphere, and extend outwards into the Sun's hot outer atmosphere.

Solar Flare

Occurs when magnetic energy that has built up in the solar atmosphere is suddenly released.


The result of charged particles colliding, creating bright lights in the sky.