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Waspie_Dwarf

The X-Ray Sun Over 5.5 Years

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The X-Ray Sun Over 5.5 Years

Behold five and a half years worth of full-sun observations from XRT. A dramatic illustration of the solar cycle, this movie begins about one year before the first reversed-polarity sunspot ushered in the current cycle on January 8, 2008. The solar cycle is a periodic variation in the Sun's activity that is caused by the gradual "tangling" and eventual reversal of its magnetic field.

Credit:JAXA/NAOJ/NASA

Source: NASA - Multimedia

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Wow, pretty amazing video. Can actually see somewhat dramatic changes in the activity over the last 5 years.

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