H. G. (Herbert George) Wells
H. G. Wells' The Time Machine, from 1895, popularized the idea of a vehicle that allows its user to travel intentionally and selectively across time, and indeed Wells is credited with coining the very term "time machine." The Time Traveler of this novella tests his time machine with a leap forward to the year 802,701 A.D., to find that evolution has produced two very different post-human races - the peaceful and childlike fruit-eating Eloi
...Causing mass hysteria as listeners of its 1938 radio broadcast believed a Martian invasion of Earth really was taking place, H. G. Wells' The War of the Worlds is perhaps the most famous novel of its genre. This 1898 story has spawned films, radio and television series and comic-book adaptions, and its popularity endures today.