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Kelvin-Helmholtz instability seen on the Sun
Boing Boing • • science
Key Points:
- The Inouye Solar Telescope in Hawaii has captured the most detailed images of the Sun's surface, revealing it is covered in whirlpools caused by magnetic fields twisted by hot gas motion.
- These whirlpools, known as Kelvin-Helmholtz instabilities, occur when two fluids slide past each other, creating spiraling vortices spaced 50 to 65 kilometers apart on the Sun.
- The twisting motions generate magnetic energy that can lead to large-scale solar explosions such as flares and coronal mass ejections, which are significant sources of space weather.
- Space weather events can disrupt power grids, satellites, and pose risks to astronauts, making understanding the Sun's small-scale physics crucial for prediction and prevention.
- Scientists emphasize the importance of solar observations for advancing human knowledge, noting that key discoveries like experimental proof of Einstein’s general relativity originated from solar studies.
