Which planet has the fastest rotation in the Solar System, completing a full rotation in approximately 10 hours, giving it the shortest day among all planets?
- AOption (a)
Jupiter
- BOption (b)
Saturn
- COption (c)
Neptune
- DOption (d)
Earth
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Correct answer
Jupiter
Why this answer is correct
The correct answer is Jupiter.
Key Points
- Jupiter is the largest planet in our Solar System and holds the record for the fastest rotation of any planet.
- It completes a full rotation on its axis in approximately 9 hours and 55 minutes, which is commonly rounded to 10 hours.
- This rapid spinning gives Jupiter the shortest day among all the planets in the Solar System.
- The high rotational speed causes the planet to bulge at the equator and flatten at the poles, a shape known as an oblate spheroid.
- Jupiter is a gas giant, composed primarily of hydrogen and helium, and its fast rotation contributes to the intense magnetic field and the distinct cloud bands seen in its atmosphere.
- Despite its massive size, its equatorial rotation velocity is about 12.6 km/s (approximately 45,300 km/h).
Additional Information
- Saturn: It has the second-shortest day in the Solar System, completing a rotation in about 10.7 hours.
- Neptune: A rotation on Neptune takes approximately 16 hours.
- Earth: Our home planet takes nearly 24 hours to complete one full rotation.
- Venus: In contrast to Jupiter, Venus has the slowest rotation, taking about 243 Earth days to spin once on its axis, which is actually longer than the time it takes to orbit the Sun.
- The Great Red Spot, a giant storm on Jupiter, is also influenced by the planet's extremely rapid rotation and atmospheric dynamics.