Laser-blasted plasma shows how instabilities could heat the sun’s corona

October 26, 2026 · 5:00 pm 1 sources

Image: Phys.org

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• Laser-blasted plasma shows how instabilities could heat the sun's corona
  Phys.org · October 26, 2026 17:00
  From its visible surface, the sun radiates heat at a relatively cool temperature of 5,800 Kelvin. Yet within the thin outer layer of the sun's atmosphere known as the corona, electrons can reach temperatures of millions of degrees, for reasons astronomers have yet to fully explain.