Astronomy science
From the ancient days
   The Stone Age
   Ancient civilization
   Antiquity
The Middle Ages Astronomy
   N. Copernic
   I. Kepler
   G. Galilei
XVII-XIX centuries...
   I. Newton
   M. Lomonosov
   P. Laplas
   W. Gershel
Nowadays
   A. Einstein
   The time and its storage
   Unusual occurrences in the sky
   Space observation
   The greatest discoveries of the 20-th century
Solar system
   Size and strusture
   The Sun Star
   Elusive Mercury
   Venus under the clouds
   The Earth
   Mars without inhabitants
   Jupiter giant
   Saturn: the magnificence of the rings
   Blue Uranus
   Neptune - the kingdom of cold
   Pluto - the lost world
   Solar and lunar eclipses
The expanses of Universe
   Stars...
   Stellar congestions, associations
   Among the stars
   The sky inhabitants - the constellations
   The small solids
   The variety of galaxies
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