'Textbooks will need to be updated': Jupiter is smaller and flatter than we thought
undefined 4, 2026
New data from NASA’s Juno spacecraft show that Jupiter is slightly smaller and flatter than scientists believed for decades. Using precise radio-signal measurements, researchers refined the planet’s size by a few kilometers, improving models of its interior and atmospheric dynamics. Though the change is subtle, it helps scientists better understand how Jupiter formed and how gas giant planets evolve, both in our solar system and beyond.
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