News | NASA's Juno Finds Changes in Jupiter's Magnetic Field

NASA's Juno mission to Jupiter made the first definitive detection of a planetary magnetic that changes over time, a phenomenon called secular variation.
"It is incredible that one narrow magnetic hot spot, the Great Blue Spot, could be responsible for almost all of Jupiter's secular variation, but the numbers bear it out," said Moore. "With this new understanding of magnetic fields, during future science passes we will begin to create a planetwide map of Jupiter's secular variation. It may also have applications for scientists studying Earth's magnetic field, which still contains many mysteries to be solved."

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