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1930 in science
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==Astronomy and space exploration== * January 15 β The [[Moon]] moves into [[perigee]] at the same time as the [[lunar phase]] reaches its fullest. This is the closest Moon distance to Earth (at 356,397 km) in 23 years and it will not come closer until 2257.<ref>{{cite web|url=http://www.idialstars.com/clfumo.htm|archive-url=https://web.archive.org/web/20081215031654/http://www.idialstars.com/clfumo.htm|url-status=dead|archive-date=December 15, 2008|title=Closest Full Moon in 23 Years|date=2008-12-12|work=Bruce McClure's Astronomy Page}}</ref> * February 18 β [[Pluto]] is identified by [[Clyde Tombaugh]] from photographs taken during January at the [[Lowell Observatory]]. * [[Bernhard Schmidt]] invents the [[Schmidt Camera]].<ref>{{cite web|url=http://www.ast.cam.ac.uk/history/schmidt|title=Bernhard Schmidt|publisher=[[University of Cambridge]]|archiveurl=https://web.archive.org/web/20080524175425/http://www.ast.cam.ac.uk/history/schmidt|archivedate=2008-05-24|url-status=dead}}</ref>
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