The Newest, Up-Close Photos Of Jupiter's Great Red Spot
NASA's Juno spacecraft sent back its closest images yet of Jupiter's Great Red Spot.LEARN MORE
This finding adds to our understanding of how other planets interact with their surrounding environment in space.
Like Earth, Jupiter generates some extraordinary light shows, aka auroras. But what exactly causes the powerful ones on Jupiter has been a mystery — until now.
Experts thought Jupiter's auroras happened when solar wind pushed accelerating electrons directly onto the atmosphere, similar to what happens during Earth's most intense auroras.
But observations from NASA's Juno spacecraft show the charged particles didn't come directly from the solar wind but instead were scattered and trapped in its magnetic field.
On Earth, this process leads to less exciting light shows. But Jupiter is so much larger and more energetic that even the more passive process causes auroras far stronger than any on Earth.
This finding adds to our understanding of how different planets interact with surrounding space weather, but this is only one of the first direct measurements of Jupiter's aurora. Astronomers say they need more data to understand exactly how it behaves.
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