Uranus, the third-largest planet in our solar system, is sometimes visible with the unaided eye. Credit: Creators.com illustration How many planets are there in our solar system? Nine? Eight? Twelve?

"Every component of that system has features that violate some of our ideas about how planets work." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. When the Voyager 2 ...

Much of our understanding of Uranus comes from Voyager 2's flyby, which to date remains the only time a spacecraft has visited the planet. Voyager 2's data on the magnetosphere surrounding Uranus has ...