NASA’s newest sun-watcher is the Interface Region Imaging Spectrograph. It was launched last year to track how energy and heat move through a little understood region of the sun called the interface region which is sandwiched between the solar surface and its outer atmosphere or corona. The interface region is where the cooler temperatures of the sun’s surface transition to the hotter temperatures above. All the energy to power the sun’s output must make its way through this region. This movie shows succeeding images from IRIS of the same area of the sun in different wavelengths. Each image carries information about how fast the solar material is moving, which has shown scientists that a series of loops are twisting in the sun’s lower atmosphere.


Video: NASA

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