An American astronomer and early SF writer.
He showed a talent for explaining scientific details in a way that made them clear to the ordinary reader, leading Andrew Carnegie to invite him to deliver The Urania Lectures in 1894 on the sciences and related matters.
Serviss toured the United States for over two years delivering these lectures, then settled down to become a popular speaker in the New York area. He also wrote a syndicated newspaper column devoted to astronomy and other sciences and wrote frequently for the leading magazines of the day.
He wrote several books popularizing science.
His SF writing consisted of the following novels: Edison's Conquest of Mars (1898), A Columbus of Space (1909), The Sky Pirate (1909), The Second Duluge (1911), and The Moon Maiden (1915). He also wrote the SF short story "The Moon Metal" (1900).