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Astronomical objects discovered in 1851Moons with a prograde orbitUmbriel

Umbriel

Adapted from Wikipedia · Explorer experience

A detailed image of Umbriel, one of Uranus' moons, showing its heavily cratered surface as captured by the Voyager 2 spacecraft in 1986.

A Moon Named Umbriel

Umbriel is a beautiful moon that orbits the planet Uranus. It is the third-largest moon of Uranus and was discovered on October 24, 1851, by an astronomer named William Lassell. He found Umbriel at the same time as another moon called Ariel.

Umbriel is named after a character in a poem by Alexander Pope called _The Rape of the Lock. The name comes from a Latin word meaning "shadow." This moon is made mostly of ice mixed with rock, and scientists think it might have a rocky core surrounded by an icy mantle.

A Visit from Voyager 2

The only time scientists saw Umbriel up close was in January 1986, when the Voyager 2 spacecraft flew by and took pictures. These pictures helped us learn about 40% of Umbriel's surface. Even though it looks quiet and old now, some deep valleys hint that it may have been active inside in the past.

Dark and Cratered Surface

Umbriel's surface is very dark and has many large impact craters. One famous crater is called Wunda, and it has a bright ring of material inside it. The surface also has long, narrow valleys and dark shapes called polygons. These might have formed a long time ago when Umbriel was more active inside.

Umbriel is a fascinating world that helps us learn about the moons of Uranus. Even though we have only seen part of its surface, it holds many secrets waiting to be discovered!

Images

An artist's illustration of the Voyager spacecraft traveling through space.
A diagram showing the relative sizes of Earth, the Moon, and the moon Umbriel.
A colorful map of Umbriel, one of the moons of Uranus, showing its surface features.
A stunning view of the planet Jupiter and its four largest moons — Io, Europa, Ganymede, and Callisto — captured by the Voyager 1 spacecraft.
A colorful view of the dwarf planet Pluto and its large moon Charon, showing their different surface features as captured by NASA's New Horizons spacecraft.
An image of asteroid 243 Ida and its tiny moon Dactyl, taken by the Galileo spacecraft in 1993. This discovery helped scientists learn more about objects in space!
A stunning view of Earth rising over the lunar horizon, captured by astronauts during the Apollo 8 mission in 1968.
A colorful collection of planets in our solar system, showing Mercury, Venus, Earth with its Moon, Mars, Jupiter, Saturn, Uranus, and Neptune. These images were captured by spacecraft to help us learn about space!
An artist's depiction of HE 1523-0901, one of the oldest known stars in our galaxy, located about 7,500 light-years from Earth.

This article is a child-friendly adaptation of the Wikipedia article on Umbriel, available under CC BY-SA 4.0.

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