QUESTION #294
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Which planet rotates so fast that its day is only 10 hours long?

Asked by: Lindsey

Answer

Both Jupiter and Saturn have days that last about 10 hours. Jupiter has a period of 0.410 earth days or about 9.84 hours and Saturn has a period of 0.426 earth days or about 10.224 hours.
Answered by: Mike Perkins, Physics/Astronomy Major, Penn State