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Bright auroras on Jupiter are captured by Webb Space Telescope

  • On December 25, 2023, Jonathan Nichols and his team from the University of Leicester captured detailed images of Jupiter's auroras using the James Webb Space Telescope near-infrared camera.
  • The observations followed knowledge that Jupiter's strong magnetic field captures charged particles, including those from Io's volcanoes, producing auroras much brighter than Earth's.
  • The auroral region showed rapid variability, with lights flickering by the second, and a brightness component observed by Webb lacked a clear counterpart in simultaneous ultraviolet Hubble images.
  • Scientists observed that Jupiter's auroras are vastly more powerful than those on Earth and involve an unusual mix of large numbers of low-energy particles striking the atmosphere, prompting further investigation into the planet's magnetosphere.
  • These findings provide new insights into Jupiter's magnetosphere and support future observations, including those by ESA’s Juice mission aiming to study Jupiter and its moons closely.
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The Hamilton Spectator broke the news in Hamilton, Canada on Monday, May 12, 2025.
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