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1915 in science
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==Astronomy== * January β British physicist Sir [[Joseph Larmor]] publishes his observations on "The Influence of Local Atmospheric Cooling on Astronomical Refraction".<ref>''Monthly Notices of the Royal Astronomical Society'' '''75''':205β10.</ref> * March 19 β [[Pluto]] is photographed for the first time but is not classified as a [[planet]]. * [[Albert Einstein|Einstein's]] new theory of [[general relativity]] is used to explain [[Mercury (planet)|Mercury]]'s strange motions that baffled [[Urbain Le Verrier]]. * [[Robert T. A. Innes|Robert Innes]] discovers [[Proxima Centauri]], the closest star to Earth after the Sun.
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