In Depth | Uranus Moons – NASA Solar System Exploration All of Uranus's inner moons (those observed by Voyager 2) appear to be roughly half water ice and half rock The composition of the moons outside the orbit of Oberon remains unknown, but they are likely captured asteroids
Planet Compare - NASA Solar System Exploration NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
RPS 3D Viewer - NASA Solar System Exploration NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
In Depth | Our Solar System - NASA Solar System Exploration Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids
In Depth | Moons – NASA Solar System Exploration In the outer solar system, the gas giants Jupiter and Saturn and the ice giants Uranus and Neptune have dozens of moons As these planets grew in the early solar system, they were able to capture smaller objects with their large gravitational fields
In Depth | Oberon – NASA Solar System Exploration Oberon is the second largest moon of Uranus Discovered in 1787, little was known about this moon until Voyager 2 passed it during its flyby of Uranus in January 1986 Oberon is heavily cratered―similar to Umbriel―especially when compared to three other moons of Uranus: Ariel, Titania and Miranda
Fifteenth Anniversary of Voyager 2 Flyby of Uranus in 1986 The first unmanned space probe flyby in history of the planet Uranus by Voyager 2 on January 24, 1986 should have been an exciting one in the history of planetary exploration
Bibliography - NASA Solar System Exploration Information on this site is gathered either directly from scientists and engineers working on active missions or from Websites from global space agencies, including NASA and the European Space Agency We also rely on information provided by research and development centers, national and international observatories, private observatories and others on the list below
Solar System Exploration The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1 3 million asteroids, and about 3,900 comets