"Edison's Conquest of Mars" by Garrett P. Serviss is a science fiction novel published in 1898. Written as a sequel to an unauthorized version of H. G. Wells's "The War of the Worlds," the story follows inventor Thomas Edison as he leads Earth's united nations in a counterattack against Mars. After studying captured Martian technology, Edison develops anti-gravity ships and disintegration rays. The expedition ventures through space, battles alien forces, and ultimately confronts the Martians on their home planet in humanity's fight for survival. (This is an automatically generated summary.)