The study suggests mysterious heating of the solar corona by solar bonfires

The temperature of the Sun’s outer atmosphere, the corona, has puzzled scientists for decades. It stretches millions of kilometers into space and is incredibly hot at over 1.7 million degrees Fahrenheit (1 million degrees Celsius). On the other hand, the sun’s surface has a “pleasant” temperature of 9,900 degrees Fahrenheit (5,500 degrees Celsius). The difference defies logic: in most cases, the material closer to the heat source is hotter than anything farther away. Scientists have long known that some unknown mechanism must be at work.

A new study has shown that the heat generated by the newly discovered miniature solar flares around the campfire may have been enough to withstand the tremendous heating of the corona. The study was presented at the General Assembly of the European Geosciences Union (EGU) on Tuesday, April 27, 2021, and accepted for publication in the journal Astronomy and Astrophysics.

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