Introduction

  • Hannu Karttunen
  • Pekka Kröger
  • Heikki Oja
  • Markku Poutanen
  • Karl Johan Donner

Abstract

On a dark, cloudless night, at a distant location far away from the city lights, the starry sky can be seen in all its splendour (Fig. 1.1). It is easy to understand how these thousands of lights in the sky have affected people throughout the ages. After the Sun, necessary to all life, the Moon, governing the night sky and continuously changing its phases, is the most conspicuous object in the sky. The stars seem to stay fixed. Only some relatively bright objects, the planets, move with respect to the stars.

Keywords

Dust Retina Tral 

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Further Reading

  1. Mitton, S. (ed.) (1977): Cambridge Encyclopaedia of Astronomy (Cape, London).Google Scholar
  2. Shu, F. H. (1982): The Physical Universe (University Science Books, Mill Valley).Google Scholar
  3. Unsöld, A. (1983): The New Cosmos, 3rd ed. (Springer, Berlin, Heidelberg).Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • Hannu Karttunen
    • 1
  • Pekka Kröger
    • 2
  • Heikki Oja
    • 3
  • Markku Poutanen
    • 4
  • Karl Johan Donner
    • 3
  1. 1.Tuorla ObservatoryUniversity of TurkuPiikköFinland
  2. 2.HelsinkiFinland
  3. 3.University of HelsinkiObservatoryFinland
  4. 4.Finnish Geodetic InstituteMasalaFinland

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