Since we recently learned a lot about the sun in class, this photo of a prominence beyond the edge of the sun proves to be increasingly relevant to classroom material. The prominence photoed above is a sea of hot gas in the chromosphere can be seen in the light reflected by hydrogen. The photo even shows how the Earth is smaller than the prominence. Prominences are incredibly hot, but next to the sun appear darker considering the sun is hotter in comparison. These prominences last normally last about a month and may erupt in a Coronal Mass Ejection, expelling hot gas into the Solar System which could hit the Earth and cause auroras.
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