Editing Gravity (section)

==Definitions==
Gravity is the word used to describe both a fundamental physical interaction and the observed consequences of that interaction on macroscopic objects on Earth. Gravity is, by far, the weakest of the four fundamental interactions, approximately 10<sup>38</sup> times weaker than the [[strong interaction]], 10<sup>36</sup> times weaker than the [[electromagnetic force]], and 10<sup>29</sup> times weaker than the [[weak interaction]]. As a result, it has no significant influence at the level of [[subatomic particle]]s.<ref>{{cite book |title=Scientific Development and Misconceptions Through the Ages: A Reference Guide |edition=illustrated |first1=Robert E. |last1=Krebs |publisher=Greenwood Publishing Group |year=1999 |isbn=978-0-313-30226-8 |page=[https://archive.org/details/scientificdevelo0000kreb/page/133 133] |url=https://archive.org/details/scientificdevelo0000kreb|url-access=registration }}</ref> However, gravity is the most significant interaction between objects at the [[macroscopic scale]], and it determines the motion of [[planet]]s, [[star]]s, [[Galaxy|galaxies]], and even [[Electromagnetic radiation|light]].

Gravity, as the gravitational attraction at the surface of a planet or other celestial body,<ref>{{ citation | title = McGraw-Hill Dictionary of Scientific and Technical Terms | edition = 4th | location = New York | publisher = [[McGraw-Hill]] | year = 1989 | isbn = 0-07-045270-9 | ref = {{harvid|McGraw-Hill Dict|1989}} }}</ref> may also include the [[centrifugal force]] resulting from the planet's rotation {{Crossreference|text=(see {{slink||Earth's gravity}})|printworthy=1}}.<ref name=HWM/>