Wilhelm Beer und German Person-Info 

( Ich bin Wilhelm Beer)
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The moon

phys.org
The lunar map and book on lunar features created by German astronomers Wilhelm Beer and Johann Heinrich Mädler between and were the first accurate trigonometric study of lunar features, and included the heights of more than a thousand mountains. Lunar craters, first noted by Galileo, ...

Wilhelm Beer, Germany, amateur astronomer, constructed 1st... January...

www.brainyhistory.com
Wilhelm Beer, Germany, amateur astronomer, constructed 1st... January 4 in History
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