By Alexis Rouillard, CNRS researcher, IRAP and Philippe Louarn, CNRS research director, IRAP
Why is the Sun’s atmosphere two hundred times hotter than its surface? How are solar winds and thunderstorms created? To answer these big astrophysical questions, the Parker Solar Probe and Solar Orbiter space probes set off in 2018 and 2020 to discover the Sun’s immediate environment: the solar corona.
After several years of observations, they have highlighted, very close to the Sun, an extremely dynamic environment constantly disturbed by ejections of material and thus provide new clues to the formation of solar winds and storms.
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