Friday: Astronomy
Which planet in our solar system has the shortest day?
Make Your Pick!
Hint: It may be huge, but it spins like a cosmic fidget spinner.
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Jupiter has the shortest day of any planet in our solar system—just under 10 hours long.
Despite being the largest planet by far, with a diameter more than 11 times that of Earth, it rotates at incredible speed on its axis. This rapid spin contributes to Jupiter’s distinctive oblate shape, meaning it bulges at the equator.
The reason for its fast rotation isn't entirely known, but it likely has to do with the conservation of angular momentum from the planet’s formation. Because of this swift rotation, Jupiter experiences extreme weather patterns, including its famous Great Red Spot—a gigantic storm system larger than Earth that’s been churning for centuries.
