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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.
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