The picture is a composite of two images recorded from a distance of 229,000 miles. The icy, rocky world is seen to be covered with impact craters. A prominent system of fault valleys, some nearly 1,000 miles long, is visible as trench-like features near the terminator (shadow line). Deposits of highly reflective material which may represent frost can be seen along the sun-facing valley walls. The large impact crater near the top, known as Gertrude, is about 180 miles across. At the bottom the 60 mile wide fault valley, Belmont Chasma, cuts into crater Ursula. Titania itself is 1,000 miles in diameter.Uranus: Moons"Sweet Moon," William Shakespeare wrote in "A Midsummer Night's Dream," "I thank thee for thy sunny beams; I thank thee, Moon, for shining now so bright." Centuries later, the moons of Uranus pay homage to the famous playwright.While most of the satellites orbiting other planets take their names from Greek mythology, Uranus' moons are unique in being named for Shakespearean characters, along with a couple of the moons being named for characters from the works of Alexander Pope.Oberon and Titania are the largest Uranian moons, and were first to be discovered -- by William Herschel in 1787. William Lassell, who had been first to see a moon orbiting Neptune, discovered the next two, Ariel and Umbriel. Nearly a century passed before Gerard Kuiper found Miranda in 1948. And that was it until a NASA robot made it to distant Uranus.The Voyager 2 spacecraft visited the Uranian system in 1986 and tripled the number of known moons. Voyager 2 found an additional 10, just 26-154 km (16-96 miles) in diameter: Juliet, Puck, Cordelia, Ophelia, Bianca,Desdemona, Portia, Rosalind, Cressida and Belinda.LEIA MAISemhttps://solarsystem.nasa.gov/planets/profile.cfm?Object=Uranus&Display=Satshttp://it.wikipedia.org/wiki/Urano_%28astronomia%29#mediaviewer/File:Uranian_moon_montage.jpgNASA/JPL - http://photojournal.jpl.nasa.gov/catalog/PIA01361 http://ciclops.org/view/3461/Uranus_-_Montage_of_Uranus_five_largest_satellitesMontagem dos cinco maiores satelites de Urano. Da esquerda para a direita em ordem crescente de distancia de Urano sao Miranda, Ariel, Umbriel, Titania e Oberon. As imagens sao apresentados para mostrar dimensoes relativas correctas e brilho. A cobertura e incompleta por Miranda e Ariel; circulos cinza representam areas faltantes (subtitulo original NASA embora revisto como imagem foi rodada)Moons: Uranus has 27 moons. Five of these moons are large and the rest are smaller. The largest moon is Titania, followed by Oberon, Umbriel, Ariel and Miranda. Some of the smaller moons are named: Belinda, Bianca, Caliban, Cordelia, Cressida, Desdemona, Juliet, Ophelia, Portia, Puck, and Rosalind.http://www.kidsastronomy.com/uranus.htmhttps://solarsystem.nasa.gov//multimedia/display.cfm?IM_ID=422http://photojournal.jpl.nasa.gov/catalog/PIA00142LEIA MAISemhttps://solarsystem.nasa.gov/planets/profile.cfm?Object=Uranus&Display=RingsRingsUranus also has rings, though they don't stretch out as far as the rings of Saturn. The rings of Uranus are made up of black dust particles and large rocks.http://www.kidsastronomy.com/uranus.htmhttp://solarsystem.nasa.gov/multimedia/gallery/Uranus_2001-2007.jpgRing ChangesDate: 1 Jan 2007Keck Observatory infrared images show how Uranus and its rings changed, as viewed from Earth, from 2001-2007. The south pole is at the left in the images.Missoes espaciais A exploracao de Urano foi feita apenas por meio da sonda Voyager 2 e nao estao previstas no momento do missoes exploratorias adicionais no local . Para suprir a falta de informacao directa, as mudancas na atmosfera do planeta sao estudadas atraves de campanhas de observacao telescopica, particularmente usando a Camera Planetaria de Campo Largo , a bordo do telescopio espacial Hubble