Eleven new moons of Uranus are discovered by the Voyager 2 probe. Their exact positions had been predicted a year earlier by Nikolai Gorkavyi and Alexei Fridman in the article “On the Resonance Character of the Rings of Uranus, Determined by Its Undiscovered Moons.” The rings were discovered by occultation on March 10, 1977. The eleven new moons bring the total to 16; they are Cordelia, Ophelia, Bianca, Cressida, Desdemona, Juliet, Portia, Rosalind, Belinda, Perdita, and Puck.
