Europe

A supernova (pl.: supernovae) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when …

Surtsey ("Surtr's island" in Icelandic, Icelandic pronunciation: [ˈsʏr̥(t)sˌeiː] ⓘ) is an uninhabited volcanic island located in the Vestmannaeyjar archipelago …

Technetium is a chemical element; it has symbol Tc and atomic number 43. It is the lightest element whose isotopes are all radioactive. Technetium is one of onl…

The Importance of Being Earnest, a Trivial Comedy for Serious People is a play by Oscar Wilde, the last of his four drawing-room plays, following Lady Windermer…

Theodore II Doukas Laskaris or Ducas Lascaris (Greek: Θεόδωρος Δούκας Λάσκαρις, romanized: Theodōros Doúkās Láskaris; November 1221/1222 – 16 August 1258) was E…

Thomas Cranmer (2 July 1489 – 21 March 1556) was an English theologian who was a leader of the English Reformation and served as Archbishop of Canterbury during…

Thorium is a chemical element; it has symbol Th and atomic number 90. Thorium is a weakly radioactive light silver metal which tarnishes olive grey when it is e…

Through the Looking-Glass, and What Alice Found There is a novel published in December 1871 by Lewis Carroll, the pen name of Charles Lutwidge Dodgson, a mathem…

The thylacine (/ˈθaɪləsiːn/; binomial name Thylacinus cynocephalus), also commonly known as the Tasmanian tiger or Tasmanian wolf, is an extinct species of carn…

Triangulum Australe is a small constellation in the far Southern Celestial Hemisphere. Its name is Latin for "the southern triangle", which distinguishes it fro…

Turtles (order Testudines) are reptiles characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the…

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. …

Uranus is the seventh planet from the Sun. It is a gaseous cyan-coloured ice giant. Most of the planet is made of water, ammonia, and methane in a supercritical…

Vidkun Abraham Lauritz Jonssøn Quisling (/ˈkwɪzlɪŋ/; Norwegian: [ˈʋɪ̂dkʉn ˈkʋɪ̂slɪŋ] ⓘ; 18 July 1887 – 24 October 1945) was a Norwegian military officer, politi…

A white dwarf is a very dense type of star: in an Earth-sized volume, it packs a mass that is comparable to the Sun. A white dwarf radiates light from residual …

William the Conqueror (c. 1028 – 9 September 1087), sometimes called William the Bastard, was the first Norman king of England (as William I), reigning from 106…

The Winter War was a war between the Soviet Union and Finland. It began with a Soviet invasion of Finland on 30 November 1939, three months after the outbreak o…

Ælfheah (c. 953 – 19 April 1012), more commonly known today as Alphege, was an Anglo-Saxon Bishop of Winchester, later Archbishop of Canterbury from 1006 to 101…

Æthelberht (/ˈæθəlbərt/; Old English: Æðelberht [ˈæðelberˠxt]; c. 550 – 24 February 616) was King of Kent from about 589 until his death. The eighth-century mon…

Æthelred I (alt. Aethelred, Ethelred; Old English: Æthel-ræd, lit. 'noble counsel'; 845/848 – 871) was King of Wessex from 865 until his death in 871. He was th…

Æthelred II (c. 968 – 23 April 1016), known as Æthelred the Unready, was King of the English from March 978 to December 1013 and again from February 1014 until …