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Earth and space science  
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Educational Level:
Middle school  
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Heliophysics  
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Focusing on the size of our solar system, these two short videos address both its vastness and the measurement of its distances. Part One defines the limits of the solar system; Part Two introduces the Astronomical Unit (AU) and applies it to... (View More)

This is a game associated with activities during Solar Week, a twice-yearly event in March and October during which classrooms are able to interact with scientists studying the Sun. Outside of Solar Week, information, activities, and resources are... (View More)

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