Newton wasn't the only person with ideas about gravity. People from all over had their pet theories, including René Descartes, who had the home town advantage in France. That is, until an intellectual lush decided to change that.
Before he wrote the famous eighteenth-century novel Candide, Voltaire wrote non-fiction books about Newtonian physics, and fiction about giant aliens visiting Earth from Sirius and Saturn. Cory Gross from Voyages Extraordinares explains.