Umbriel (/ ˈʌmbriəl /) is the third-largest moon of Uranus. It was discovered on October 24, 1851, by William Lassell at the same time as neighboring moon Ariel. It was named after a character in …

Nov 3, 2024 · Umbriel is the darkest of Uranus' largest moons. It reflects only 16 percent of the light that strikes its surface, a feature similar to the highland areas of Earth's Moon.

Umbriel, the third nearest and darkest of Uranus's five major moons, in an image made by Voyager 2 on Jan. 24, 1986. Umbriel is also the most heavily and uniformly cratered of the major Uranian moons, …

Umbriel is defined as one of the medium-sized satellites of Uranus, characterized by a heavily cratered surface indicating its old age, a relatively high density suggesting a larger fraction of rocky material, …

Umbriel (/ ˈʌmbriəl /) is the third-largest moon of Uranus. It was discovered on October 24, 1851, by William Lassell at the same time as neighboring moon Ariel. It was named after a character in …

Umbriel, one of Uranus's five major moons, is a celestial body shrouded in mystery. Discovered by Otto Struve on October 8th, 1847, this enigmatic satellite remains largely unexplored, its surface details …

Dec 13, 2025 · Umbriel is a moon that orbits the planet Uranus and has a surface area of 4,296,116.52 and semi-major axis of 266.

Umbriel is the third largest of Uranus' moons. It is also one of the darkest moons, reflecting only 16 percent of the light that strikes its surface. The most curious feature of Umbriel is a large, bright ring …

Umbriel is the third-largest moon of Uranus. It was discovered on October 24, 1851, by William Lassell at the same time as neighboring moon Ariel. It was named after a character in Alexander Pope's …

Umbriel is the darkest satellite of Uranus. It is about the same size as Ariel and has about the same density. The surface appears to be old with large craters. Near the top is a bright ring called the …