Using this new technology, the allies construct an armada of space ships for the attack. Edison takes some ships to the Moon on a test run; using the first known fictional depiction of space suits. There the explorers uncover evidence of an extinct civilization of giants. The armada heads on, discovering a solid gold asteroid being mined by the Martians. The humans fight two space battles against the Martians, suffering heavy casualties but ultimately winning thanks to the superiority of Edison's ray gun compared to the Martians' electric weapons. The humans take a captive, from whom they learn the Martian language.