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Become a nitrogen atom in the nitrogen cycle in our Traveling Nitrogen Classroom Activity Kit/Game. See all our games, activity kits and classroom activities.

Monitoring and Modeling Space Weather

   How do we know what kind of "weather" we're having in space? Scientists use a network of ground-based observatories combined with satellite-based instruments to monitor solar activity, measure magnetic fields, and detect many types of radiation. They also use complex computer models to help predict the ebb and flow of space weather systems.
Sunspots don't look that big when you see them on the Sun (remember NEVER look directly at the Sun), but in fact they can be enormous!  This composite image shows just how big sunspots can be, to scale with an image of Earth.  Sunspots can be as big, or bigger, than Earth.  The <a href="/sun/activity/sunspot_history.html&dev=1">earliest written record of a sunspot observation</a> was made by Chinese astronomers around 800 B.C.<p><small><em>Image courtesy of Windows to the Universe using images from the Royal Swedish Academy of Sciences (sunspot image) and NASA (Earth image).</em></small></p>

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA