Galileo Galilei, with a homemade telescope, noticed three points of light near Jupiter. Initially believing they were distant ...

Collaborative work by amateur and professional astronomers has helped to resolve a long-standing misunderstanding about the composition of Jupiter's clouds. Instead of being formed of ammonia ice -- ...

Jupiter is huge when it comes to planets in our solar system, but it turns out there's actually an upper limit when it comes ...

Billions of years ago, in the frigid outer reaches of our solar system, two icy worlds collided. Rather than destroying each ...