Tycho

/tuy"koh/, n.
a prominent crater in the third quadrant of the face of the moon, about 56 miles (90 km) in diameter.

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▪ lunar crater
 conspicuous impact crater lying at the centre of the most extensive system of bright rays on the near side of the Moon. The rays, which are light-coloured streaks formed of material ejected from the impact, dominate the southern highlands and extend for more than 2,600 km (1,600 miles) across the Moon's surface.

      Tycho, located at 43° S, 11° W, in the highlands south of the Nubium Basin (Mare Nubium) impact structure, measures 85 km (53 miles) in diameter and about 4 km (2.5 miles) deep. Laboratory analysis of samples returned in 1972 by Apollo (Apollo program) 17, whose landing site (see Taurus-Littrow Valley) was crossed by one of Tycho's rays, suggests that the crater was formed about 100 million years ago. Because of its relatively young age, the crater retains hummocky rim deposits, terraced walls, and seemingly fresh pools of dark flowlike materials. Multispectral images from the lunar-orbiting robotic Clementine spacecraft in 1994 show that the composition of Tycho's central peak differs from that of other parts of the crater, consistent with the idea that such features of craters result from a rebound of rocks originating at greater depths in the crust under the centre of the impact.

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Universalium. 2010.

Look at other dictionaries:

  • Tycho — may refer to:*Tycho Brahe (1546–1601), Tyge Ottesen Brahe, Danish nobleman and astronomer *Tycho (crater), on the Moon *Tycho Brahe (crater), on Mars *The Tycho 1 Catalogue or Tycho 2 Catalogue of stars *Tycho Celchu, a character in the fictional …   Wikipedia

  • Tycho — m Latinized form of the name of St Tychon (d. c.450), bishop of Amathus in Cyprus, who worked to suppress the last remnants of the cult of Aphrodite on the island. The Greek name Tychōn means ‘hitting the mark’, and was chosen for the sake of its …   First names dictionary

  • Tycho — Nahaufnahme des Kraters Tycho Eigenschaften Breitengrad 43,3° S Längengrad 11,2° W Durchmesser 85 km …   Deutsch Wikipedia

  • Tycho G — Starbox begin name=Tycho G Starbox image caption=Tycho G ( g ) as seen by Hubble. NASA image . Starbox observe epoch=J2000 constell=Cassiopeia ra=RA|00|25|19.9 [http://hubblesite.org/pubinfo/pdf/2004/34/pdf.pdf] The progenitor of Tycho Brahe’s… …   Wikipedia

  • Tycho — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Tycho est le prénom de Tycho Brahe astronome danois qui a donné son nom à : Tycho (cratère), un cratère lunaire, Les Épaves de Tycho, une nouvelle et …   Wikipédia en Français

  • Tycho — griechischer Ursprung, Bedeutung: Schicksal, Glück. Namensträger: Tycho Brahe, dänischer Astronom …   Deutsch namen

  • Tycho — n. large important crater on the face of the moon; Danish family name; Brahe Tycho (1546 1601) Danish astronomer …   English contemporary dictionary

  • Tycho — /ˈtaɪkoʊ/ (say tuykoh) noun a crater in the south eastern quadrant of the moon. {named after Tycho Brahe} …   Australian English dictionary

  • Tycho — /tuy koh/, n. a prominent crater in the third quadrant of the face of the moon, about 56 miles (90 km) in diameter …   Useful english dictionary

  • tycho- — …   Useful english dictionary

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