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NASA | Top Solar Discoveries: #4

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Published on Mar 19, 2009

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A countdown of the top 5 solar discoveries from the Sun-Earth Connection Education Forum. These include the discoveries of sunspots, the solar cycle, the heliosphere, aurora formation, and space weather.

Number 4 in the Top 5 Solar Discoveries: The Seasons of the Sun. This talks about the discovery and importance of the 11-year solar cycle.

For more info: http://sunearthday.nasa.gov

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