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 == First appearance of the word Astronomy? == 

 As we have Bio-logy, Physio-logy, Socio-logy, Microbio-logy and many other simalarly created words for scientific specialization, we had also Astrology. 
 At some point (possibly when it was generally accepted that the Sun is in the center of our solar system) some astrologers abandoned Astro-logy and created a new scientific branch using the word ""Astronomy"" instead. 
 Anyone knows when was that first appearance of this word, who suggested it and when the first Astronomers group was established?"