title: The Classification of Stars
author:  Carlos Jaschek 
description: "...a clear, authoritative account of the taxonomy of stars." Science and Technology Book News<br /><br />"An excellent introduction to how astronomers are able to do stellar astronomy. The book is very well written and the diagrams and references make it a volume that will be referred to frequently by everyone interested in the problems of stellar classification." Choice
zlib_text: Seyfi Hoca 
  www.seyfihoca.com 
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  Seyfi Hoca 
  www.seyfihoca.com 
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  1. 
  A star is a large ball of hot gas, thousands 
  to millions of kilometres in diameter, 
  emitting large amounts of radiant energy 
  from nuclear reactions in its interior.----- , 
  whereas planets shine by reflected sunlight. 
  Except for the Sun, which is the nearest 
  star, stars appear only as points of light, 
  even in the largest telescopes, because of 
  their distance. 
   
  A) Stars differ fundamentally from planets in 
  that they are self-luminous 
  B) The brightest stars in Earth's sky have long 
  been given names 
  C) Stars exist alone or in systems of two or 
  more stars 
  D) Stars are seen in the same relative 
  positions year after year 
  E) With the construction of larger telescopes it 
  was found that stars are not precisely 
  "fixed" 
   
   
   
   
   
   
   
   
   
  2. 
  For more than 100 years, steam was the 
  chief source of rail power all over the world. 
  ----- . They typically provide power for main-
  line passenger excursions