Scientists finally know how long a day is on Uranus, 40 years after Voyager 2 first tried to figure it out

Researchers tracking the motion of Uranus’ auroras have found that its rotation period is 28 seconds longer than previously thought. (Image credit: ESA/Hubble, NASA, L. Lamy, L. Sromovsky) A new study shows that a day on Uranus lasts about half…











