Editing 1610 in science (section)

==Astronomy==
* January 7 – [[Galileo Galilei]] first observes the four large [[Galilean moons]] of [[Jupiter]]: [[Ganymede (moon)|Ganymede]], [[Callisto (moon)|Callisto]], [[Europa (moon)|Europa]] and [[Io (moon)|Io]], although he is unable to distinguish the latter two until the following night. In the same year he publishes his first observations by [[telescope]] in a short treatise entitled ''[[Sidereus Nuncius]]'' ("Sidereal Messenger").
* December – [[English people|English]] scientist [[Thomas Harriot]] becomes one of the first to view [[sunspot]]s through a telescope<ref>{{cite web|url=http://galileo.rice.edu/sci/harriot.html|work=The Galileo Project|title=Thomas Harriot (1560–1621)|year=1995|accessdate=2012-07-04}}</ref><ref>{{cite book|last=Williams|first=Hywel|title=Cassell's Chronology of World History|location=London|publisher=Weidenfeld & Nicolson|year=2005|isbn=0-304-35730-8|pages=[https://archive.org/details/cassellschronolo0000will/page/243 243–248]|url=https://archive.org/details/cassellschronolo0000will/page/243}}</ref>
* The [[Orion Nebula]] is discovered by [[Nicolas-Claude Fabri de Peiresc]].