The 'unimaginably hot' outer layer of the sun's atmosphere can reach temperatures of 1.7 million degrees Fahrenheit due to 'campfires' on the surface, study finds. The left panel shows a simulated view of emission from the Sun’s corona, as would be seen by Solar Orbiter’s Extreme Ultraviolet Imager. Experts have previously wondered whether these eruptions are linked to the mysterious solar corona heating phenomenon. ESA's Solar Orbiter mission will face the Sun from within the orbit of Mercury at its closest approach. 'UK engineering and science expertise has been core to the success of the Solar Orbiter mission.

Source: Daily Mail April 27, 2021 18:03 UTC