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1915 in science : ウィキペディア英語版
1915 in science

The year 1915 involved numerous significant events in science and technology, some of which are listed below.
==Astronomy==

* March 19 – Pluto is photographed for the first time but is not classified as a planet.
* Einstein's new theory of general relativity is used to explain Mercury's strange motions that baffled Urbain Le Verrier.
* Robert Innes discovers Proxima Centauri, the closest star to Earth after the Sun.

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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