The theory of gravitation was first proposed by Sir Isaac Newton in the late 17th century. Before then, the idea that things fell when dropped was known, but the mechanism for it was not. After the publication of the Principia Mathematica, it has been featured somewhat sporadically in media. This index lists all the various ways that the topic appears, whether serious or silly, wrong or right. Many of these will overlap with Artistic License - Physics. Please note that "things fall when dropped" falls under Like Reality Unless Noted.
Tropes about gravity:
Tropes with gravity in the name, but otherwise not about gravity: