Editing 1604 in science (section)

==Astronomy==
* 9 October – The [[supernova]] which becomes known as [[Kepler's Supernova]] (SN 1604) is first observed from northern Italy. From 17 October, [[Johannes Kepler]] begins a year's observation of it from [[Prague]]. {{As of|2006}}, this is the last supernova to be observed in the [[Milky Way]], and the last visible by the naked eye until [[1987 in science|1987]].<ref>{{cite web|title=SN 1604, Kepler's Supernova|url=http://seds.org/~spider/spider/Vars/sn1604.html|accessdate=2011-06-22| archiveurl= https://web.archive.org/web/20100131163501/http://seds.org/~spider/spider/Vars/sn1604.html| archivedate=31 January 2010<!--Added by DASHBot-->}}</ref><ref>{{cite web|url=http://www.nasaimages.org/luna/servlet/detail/nasaNAS~4~4~12406~114566:Three-Great-Eyes-on-Kepler-s-Supern |title=Three Great Eyes on Kepler's Supernova Remnant |publisher=[[NASA]] |accessdate=2011-06-22 |url-status=dead |archiveurl=https://web.archive.org/web/20121101082248/http://www.nasaimages.org/luna/servlet/detail/nasaNAS~4~4~12406~114566%3AThree-Great-Eyes-on-Kepler-s-Supern |archivedate=1 November 2012 }}</ref>