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Which Planet Rotates the Fastest?

astronomysolar system

Quick Answer

Jupiter rotates the fastest of all planets in our solar system, completing one rotation in just 9 hours 56 minutes.

The Full Story

Jupiter spins faster than any other planet in our solar system, completing a full rotation on its axis in approximately 9 hours and 56 minutes. This is remarkable given that Jupiter is also the largest planet, with a diameter of about 142,984 kilometers — over 11 times Earth's diameter. Its rapid rotation causes the planet to bulge noticeably at the equator; Jupiter's equatorial diameter is about 9,275 kilometers wider than its polar diameter. The fast spin also drives Jupiter's powerful weather systems, including wind speeds exceeding 600 km/h and the persistent Great Red Spot storm. Saturn is the second-fastest rotator at about 10 hours 33 minutes per rotation.

Key Facts

1.A point on Jupiter's equator moves at about 45,300 km/h due to the planet's rotation — compared to 1,670 km/h on Earth
2.Jupiter's rapid rotation generates the strongest magnetic field of any planet, about 20,000 times stronger than Earth's
3.Venus has the slowest rotation, taking 243 Earth days for one spin — longer than its 225-day orbit around the Sun

YouTube Angle

Suggested video title for this topic:

"The fastest spinning planet — why Jupiter's 10-hour day creates monster storms"