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・ 1899 in France
・ 1899 in Germany
・ 1899 in India
・ 1899 in Ireland
・ 1899 in Italy
・ 1899 in literature
・ 1899 in music
・ 1899 in New Zealand
・ 1899 in Norway
・ 1899 in organized crime
・ 1899 in paleontology
・ 1899 in philosophy
・ 1899 in poetry
・ 1899 in Portugal
・ 1899 in rail transport
1899 in science
・ 1899 in Scotland
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・ 1899 in sports
・ 1899 in Sweden
・ 1899 in Swedish football
・ 1899 in the Philippines
・ 1899 in the United Kingdom
・ 1899 in the United States
・ 1899 in Wales
・ 1899 Iowa Hawkeyes football team
・ 1899 Ireland rugby union tour of Canada
・ 1899 Italian Football Championship
・ 1899 Kansas Jayhawks football team
・ 1899 Kentucky Derby


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1899 in science : ウィキペディア英語版
1899 in science

The year 1899 in science involved some significant events, listed below.
==Astronomy==

* December 2 – During the new moon, a near-grand conjunction of the classical planets and several binocular Solar System bodies occur. The Sun, Moon, Mercury, Mars and Saturn are all within 15° of each other, with Venus 5° ahead of this conjunction and Jupiter 15° behind. Accompanying the classical planets in this grand conjunction are Uranus (technically visible unaided in pollution-free skies), Ceres and Pallas.
* The 80 cm refracting telescope is completed at Potsdam Observatory.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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