Discover 25 mind-blowing facts about Jupiter: its shrinking Great Red Spot, mysterious core, 95+ moons, planetary shield role, and NASA mission discoveries. Learn why scientists call it our solar system's Rosetta Stone.
Discover Neptune's rotation period is 16 hours and 6 minutes. Learn why measuring this gas giant's day is complex, how it compares to other planets, and the science behind its extreme winds and magnetic fields.