Editing 1910 in science (section)

==Astronomy==
* January 12 – [[Great January Comet of 1910]] first observed ([[perihelion]]: January 17).<ref>{{Cite web|last=Bortle|first=J.|title=The Bright Comet Chronicles|website=harvard.edu|url=http://www.icq.eps.harvard.edu/bortle.html|access-date=2008-11-18}}</ref>
* January 22 – At 9:30 in the evening, the Vigarano Meteorite splits as it falls to Earth in Italy at the locality of the same name, near [[Emilia-Romagna|Emilia]]. Weighing 11.5&nbsp;kg (or 25&nbsp;lb.), the stone that is recovered is the first of the [[Chondrite#Carbonaceous chondrites|CV chondrites]] named for the location. CV chondrites are described as the oldest rocks in the [[Solar System]].<ref>[http://www.site.uottawa.ca:4321/meteorites/index.html#Vigarano  University of Ottawa] {{Webarchive|url=https://web.archive.org/web/20080506131050/http://www.site.uottawa.ca:4321/meteorites/index.html#Vigarano |date=2008-05-06 }} meteorites database</ref> The other piece of the meteorite, weighing {{Convert|4.5|kg}}, is found a month later.
* April 10 – [[Halley's Comet]] becomes visible with the naked eye ([[perihelion]]: April 20);<ref>{{cite web|title=Great Comets in History|first=Donald Keith|last=Yeomans|publisher=Jet Propulsion Laboratory|url=http://ssd.jpl.nasa.gov/?great_comets|year=1998|access-date=2007-03-15}}</ref> Earth passes through its [[Comet tail|tail]] about May 19<ref>{{cite web|year=1985|title=Through the comet's tail|work=Revised extracts from "A Comet Called Halley", published by Cambridge University Press in 1985|first=Ian|last=Ridpath|url=http://www.ianridpath.com/halley/halley12.htm|access-date=2011-06-19}}</ref> (its next visit will be in 1986).
* December 30 – A [[nova]] (later referred to as [[DI Lacertae]]), is spotted in the [[constellation]] [[Lacerta]], by Anglican minister and astronomer [[T. H. E. C. Espin]], making him the first human to see the birth of the new star.<ref>[http://adsabs.harvard.edu/full/1911ApJ....33..410F Astrophys. J. 33:410–417 (1911)] "New Star on Milky Way", ''Washington Post'', January 15, 1911, p. 47</ref>
* Approximate date – The [[Hertzsprung–Russell diagram]] is developed by [[Ejnar Hertzsprung]] and [[Henry Norris Russell]].