H. G. Wells 
In the Days of the Comet [EPUB ebook] 

According to Wikipedia, 'In the Days of the Comet is a 1906 science fiction novel by H. G. Wells in which the vapors of a comet are used as a device which brings about a profound and lasting transformation in the attitudes and perspectives of humankind.’ Herbert George Wells (21 September 1866 – 13 August 1946) was an English author, now best known for his work in the science fiction genre. He was also a prolific writer in many other genres, including contemporary novels, history, politics and social commentary. Together with Jules Verne, Wells has been referred to as 'The Father of Science Fiction’.