1610 in science

The year 1610 in science and technology involved some significant events.

Astronomy

January 7 – Galileo Galilei first observes the four large Galilean moons of Jupiter: Ganymede, Callisto, Europa and 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 scientist Thomas Harriot becomes one of the first to view sunspots through a telescope{{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}}{{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}}
The Orion Nebula is discovered by Nicolas-Claude Fabri de Peiresc.

Diphtheria epidemic in Naples, during which Marco Aurelio Severino performs successful tracheotomies.{{cite journal|last=Armytage|first=W.H.G.|title=Giambattista della Porta and the Segreti|url= |journal=British Medical Journal|volume=1|pages=1129–30|year=1960|doi=10.1136/bmj.1.5179.1129|pmc=1966956|issue=5179}}

Jean Beguin publishes Tyrocinium Chymicum, the first book of chemistry lectures.
Tinsel is invented by a German silversmith, who uses real silver for the metal strands.
Bagels are created in Kraków, Poland and given as gifts to women after childbirth.

February 2 – Pierre Bourdelot, French physician, anatomist, freethinker, abbé and libertine (died 1685)
Maria Cunitz, Silesian astronomer (died 1664)
Marie Meurdrac, French chemist and alchemist (died 1680)