During the whole time that man exists on the Earth no human eye has ever seen the reverse side of the Moon. It is highly probable that at first the Moon had an axial rotation relative to the Earth but tidal friction has slowed this rotation down till the Moon remained for ever directed with one side towards the Earth.


Solar Eclipse Aerial Photography Automatic Station Pulkovo Observatory Tidal Friction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Wien 1961

Authors and Affiliations

  • A. A. Mikhailov
    • 1
  1. 1.Pulkovo ObservatoryLeningradUSSR

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