Bright auroras on Jupiter are captured by Webb Space Telescope
- On December 25, 2023, a research team headed by Jonathan Nichols at the University of Leicester utilized the James Webb Space Telescope’s Near-InfraRed Camera with the F335M filter to capture vivid images of Jupiter’s bright auroras.
- The auroras appear because Jupiter's strong magnetic field channels high-energy charged particles, including those from the volcanic moon Io, into its upper atmosphere near magnetic poles.
- Webb's sensitive infrared imaging revealed auroras hundreds of times brighter and more variable than Earth's, showing rapid flickering and unprecedented intensity with some features missing counterparts in Hubble's ultraviolet images.
- Nichols described the auroras as an incredible surprise that amazed him and observed that, contrary to their expectations of a gradual fading, the lights fluctuated rapidly, changing every second.
- These observations challenge current understanding of auroral particle interactions, prompting ongoing studies to reconcile Webb and Hubble data and to aid future missions like ESA's Juice exploring Jupiter and its moons.
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JWST Captures Jupiter's Auroras 'Fizzing And Popping With Light'
It's only fitting that Jupiter, nicknamed the king of the planets, wears a crown – and what a crown it is.Although we can't see them with our naked eyes, the giant planet sports the most powerful auroras in the Solar System – permanent shimmering caps at its north and south poles, gleaming in non-visible wavelengths – ultraviolet, infrared, and occasional bursts of X-ray. In recent years, observations with the most cutting-edge instruments h…
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