Summary:
- The article discusses a decades-old mystery surrounding the Sun's corona, which is the outer atmosphere of the Sun and is approximately 200 times hotter than the Sun's surface.
- Researchers have found new clues that suggest the heating of the Sun's corona is caused by the interaction between the Sun's magnetic field and the plasma (ionized gas) in the corona, which creates small-scale heating events called nanoflares.
- These nanoflares are thought to be responsible for the dramatic temperature difference between the Sun's surface and its corona, providing a potential solution to this long-standing solar mystery.