The Solar Corona Is Much Cooler Than The Sun Surface

The temperature in the corona is a blistering million or so degrees celsius.

The solar corona is much cooler than the sun surface.

But the temperature at the sun s surface the source of that energy is a relatively balmy 5 500 degrees. But the temperature at the sun s surface the source of that energy is a relatively balmy 5 500 degrees. It s just weird says winebarger. Abstract the processes that heat the solar and stellar coronae to several million kelvins compared with the much cooler photosphere 5 800 k for the sun are still not well known1.

She likens it to walking away from a campfire and feeling colder and colder until suddenly getting very hot. This solution to the coronal heating mystery was presented at a media briefing on april 28 2015.