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The two innermost moons, Cordelia and Ophelia, are shepherds of Uranus's ε ring, whereas the small moon Mab is a source of Uranus's outermost μ ring. [12] There may be two additional small (2–7 km in radius) undiscovered shepherd moons located about 100 km exterior to Uranus's α and β rings .
Uranus's 28 natural satellites include 18 known regular moons, of which 13 are small inner moons. Further out are the larger five major moons of the planet: Miranda, Ariel, Umbriel, Titania, and Oberon. Orbiting at a much greater distance from Uranus are the ten known irregular moons.
Nineteen moons are large enough to be round, and two, Titan and Triton, have substantial atmospheres The number of moons discovered in each year until November 2019 Mercury , the smallest and innermost planet, has no moons, or at least none that can be detected to a diameter of 1.6 km (1.0 mi). [ 2 ]
Rings, moons, storms and a bright polar cap all shine in a new image of Uranus captured by the James Webb Space Telescope. ... Nine of Uranus’ 27 known moons can also be seen as blue dots ...
The planet Uranus and its five biggest moons may not be the sterile worlds scientists have long thought.
A new study from NASA recently announced that four of Uranus’s five biggest moons may have liquid water oceans beneath their surface.
[1] [6] S/2023 U 1 was confirmed and announced by the Minor Planet Center on 23 February 2024, bringing Uranus's number of known moons from 27 to 28. [1] It is the first Uranian moon discovered in the over 20 years since the discovery of Margaret in 2003. [6] [5]
Voyager 2's visit to Uranus may have left us with the complete wrong impression of the ice giant for nearly 40 years, according to a new study. ... What that means is those five major moons of ...