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        The Sun in Motion

        This video of the Sun, captured in ultraviolet light by instruments on NASA’s Solar Dynamics Observatory spacecraft, shows solar activity that is not visible to the human eye. Active regions on the Sun surrounding sunspots appear brighter in ultraviolet light. Frequent solar eruptions and flares can be seen in these active regions.

        To view the Background Essay and Teaching Tips for this video, go to Support Materials below. This resource was developed through WGBH’s Bringing the Universe to America’s Classrooms project, in collaboration with NASA. Click here for the full collection of resources.

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