Editing 1611 in science

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The year '''1611 in [[science]]''' and [[technology]] involved some significant events.

==Astronomy==
* February 27 – [[Sunspots]] are observed by [[telescope]] by [[Frisians|Frisian]] astronomers [[Johannes Fabricius]] and [[David Fabricius]] and Johannes publishes the results of these observations in ''De Maculis in Sole observatis'' in [[Wittenberg]] later this year.<ref>{{cite web|first=C.|last=Thony|title=Spotting the spots|url=http://thonyc.wordpress.com/2011/01/08/spotting-the-spots/|work=The Renaissance Mathematicus|date=2011-01-08|accessdate=2011-08-09| archiveurl= https://web.archive.org/web/20110721212233/http://thonyc.wordpress.com/2011/01/08/spotting-the-spots/|archivedate=21 July 2011<!--Added by DASHBot-->}}</ref> Such early discoveries are overlooked however, and the first sighting is claimed a few months later by [[Galileo Galilei]] and [[Christoph Scheiner]].

==Mathematics==
* [[Johannes Kepler]] produces [[Kepler's conjecture]] on [[sphere packing]].<ref>"On the six-cornered snowflake".</ref>

==Technology==
* Completion of [[Cordouan lighthouse]] on the [[Gironde estuary]] (designed by [[Louis de Foix]]), the first wave-swept light.

==Births==
* January 28 – [[Johannes Hevelius]], German astronomer (died [[1687 in science|1687]])
* March 1 – [[John Pell (mathematician)|John Pell]], English mathematician (died [[1685 in science|1685]])
* [[Willem Piso]], Dutch physician and naturalist (died [[1678 in science|1678]])
* [[Georg Marcgrave]], German naturalist, explorer of Brazil (died [[1644 in science|1644]])

==Deaths==
* August 9 – [[John Blagrave]], English [[mathematician]] (born c.1561)
* [[Henry Hudson]], English explorer (born c.1565)

==References==
{{reflist}}

[[Category:1611]]
[[Category:17th century in science]]
[[Category:1610s in science]]