Editing 1702 in science (section)

==Astronomy==
* April 20 – [[Comet of 1702]] ([[C/1702 H1]]): The 10th-closest comet approach in history, it missed Earth by a distance of 0.0437 [[astronomical unit|AU]] (6,537,000&nbsp;km).<ref>{{cite web |url=http://neo.jpl.nasa.gov/ca/historic_comets.html |title=Historic Comet Close Approaches |publisher=NASA |accessdate=2008-01-06|url-status=dead | archiveurl=https://web.archive.org/web/20080109135952/http://neo.jpl.nasa.gov/ca/historic_comets.html| archivedate=9 January 2008 <!--Added by DASHBot-->}}</ref>
* May 5 – Globular cluster [[Messier 5]] (M5, NGC 5904) is discovered by Gottfried Kirch and his wife Maria Margarethe.
* [[David Gregory (mathematician)|David Gregory]] publishes the first textbook, ''Astronomiae physicae et geometricae elementa'', the first [[astronomy]] textbook based on [[Isaac Newton]]'s principles of motions and theory of gravitation.<ref>{{cite book |last=Bunch |first=Bryan H. |author2=Alexander Hellemans |title=The history of science and technology: a browser's guide to the great discoveries, inventions, and the people who made them, from the dawn of time to today |publisher=Houghton Mifflin Harcourt |year=2004 |pages=[https://archive.org/details/isbn_9780618221233/page/776 776] pages |url=https://archive.org/details/isbn_9780618221233 |url-access=registration |isbn=978-0-618-22123-3|accessdate= 30 July 2010 <!--Added by DASHBot-->}}</ref><ref>{{cite web|url=http://www.archiveshub.ac.uk/news/0210dgr.html |archive-url=https://archive.today/20120718164620/http://www.archiveshub.ac.uk/news/0210dgr.html |url-status=dead |archive-date=2012-07-18 |title=Archives Hub: Papers of David Gregory (1661–1708) |publisher=[[Archives Hub]] |accessdate=2008-01-06 }}</ref>