Umbriel is a
moon of
Uranus discovered together with
Ariel on October 24, 1851, by
William Lassell. It was named after a character in
Alexander Pope's poem The Rape of the Lock. Umbriel consists mainly of ice with a substantial fraction of
rock, and may be differentiated into a rocky
core and an icy
mantle. The surface is the darkest among Uranian moons, and appears to have been shaped primarily by impacts. However, the presence of canyons suggests early
endogenic processes, and the moon may have undergone an early endogenically driven resurfacing event that obliterated its older surface. Covered by numerous
impact craters reaching 210 km (130 mi) in diameter, Umbriel is the second most heavily cratered satellite of Uranus after
Oberon. The most prominent surface feature on it is a ring of bright material on the floor of
Wunda crater. This moon, like all moons of Uranus, probably formed from an
accretion disk that surrounded the planet just after its formation. The Uranian system has been studied up close only once: by the spacecraft Voyager 2 in January 1986. It took several images of Umbriel, which allowed mapping of about 40% of the moon’s surface. (more...)
... that
Michigan baseball coach Frank Sexton was confronted with a knife, a cane and an arrest warrant after declaring a forfeit when
Indiana refused to continue play due to darkness?
1948 – An uprising began on
Jeju Island, eventually leading to the deaths of between 14,000 and 30,000 individuals due to fighting between its various factions, and the violent suppression of the rebellion by the
South Korean army.
The
frontispiece to a c. 1825 edition of Childe Harold's Pilgrimage, a lengthy
narrative poem by
Lord Byron. The poem describes the travels and reflections of a world-weary young man who, disillusioned with a life of pleasure and revelry, looks for distraction in foreign lands; in a wider sense, it is an expression of the melancholy and disillusionment felt by a generation weary of the wars of the post-Revolutionary and
Napoleonic eras. This poem proved to be quite popular upon its publication in 1812. Byron himself said of this, "I awoke one morning and found myself famous."
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