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This is NASA's

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Coronal Diagnostic Experiment, 

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or CODEX —

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a solar coronagraph on

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the exterior of the

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International Space Station.

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Scientists use coronagraphs to

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block out bright light

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from the main body of the Sun

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to see its corona,

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or outer atmosphere.

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This is one of the first images

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scientists received from CODEX.

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Using a cone-shaped disk

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about the size of a tennis ball,

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held by three pylons,

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CODEX blocks the Sun in the

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center of the image to reveal

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the solar wind —

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a stream of charged particles

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that constantly flow outward

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from the Sun.

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This bright white streak,

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known as a coronal streamer,

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is a large ray-like structure

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formed by increased density

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linked to the Sun's magnetic fie

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CODEX measures the temperature

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and speed of these features

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to gain insight

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into the solar wind.

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This helps scientists better

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understand solar storms that may

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affect our communication systems

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GPS, and power grids

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here on Earth.