Many astronomers question

См. также в других словарях:

• Astronomers Reclassify Pluto as a Dwarf Planet — ▪ 2007  “What s in a name? That which we call a rose by any other word would smell as sweet.” These lines, spoken about Romeo by Shakespeare s Juliet, encapsulated the debate that peaked in 2006 over the meaning of the word planet. The original… …   Universalium

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• galaxy — /gal euhk see/, n., pl. galaxies. 1. Astron. a. a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. b. (usually cap.) See Milky Way. 2. any large and brilliant or impressive… …   Universalium

• astronomy — /euh stron euh mee/, n. the science that deals with the material universe beyond the earth s atmosphere. [1175 1225; ME astronomie ( < AF) < L astronomia < Gk. See ASTRO , NOMY] * * * I Science dealing with the origin, evolution, composition,… …   Universalium

• Definition of planet — Photograph of the crescent planet Neptune (top) and its moon Triton (center) …   Wikipedia

• Cosmology in medieval Islam — Islamic cosmology refers to cosmology in Islamic societies. It is mainly derived from the Qur an, Hadith, Sunnah, and current Islamic as well as other pre Islamic sources. The Qur an itself mentions seven heavens[1] and a vast universe sustained… …   Wikipedia

• Planet — This article is about the astronomical object. For other uses, see Planet (disambiguation) …   Wikipedia

• IAU definition of planet — This article is about the formal definition established in 2006. For prior usage, see Definition of planet. The definition of planet set in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a… …   Wikipedia

• Milky Way Galaxy — Large spiral galaxy (roughly 150,000 light years in diameter) that contains Earth s solar system. It includes the multitude of stars whose light is seen as the Milky Way, the irregular luminous band that encircles the sky defining the plane of… …   Universalium

• Pluto — This article is about the dwarf planet. For other uses, see Pluto (disambiguation). Pluto   …   Wikipedia

• planet — /plan it/, n. 1. Astron. a. Also called major planet. any of the nine large heavenly bodies revolving about the sun and shining by reflected light: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, or Pluto …   Universalium