astronomers discovered rings around Uranus! Astronomers had long suspected that Uranus has rings, but the actual discovery happened by accident. A team of three astronomers was using NASA's Kuiper Airborne Observatory to observe the atmosphere of Uranus. Uranus depicting its pair of rings. An image of Uranus depicting its pair of rings. (Image credit: NASA/CXO/University College London/W. Dunn et al; Optical: W.M. Keck Observatory) RELATED STORIES: — 5 weird facts about mysterious Uranus in photos — Uranus Is a cool place, but jokes make it the 'Saddest Planet' (video) — Latest News About Uranus, Seventh Planet from the Sun They did this during a stellar occultation, which means that a background star was passing behind the planet. Seeing how the light from that star changes when it passed through the atmosphere could yield clues about the composition of Uranus. To their surprise, the star began to flicker before it was even e...