Instinct

A 1959 science fiction novel by George O. Smith, Instinct follows alien watchers who, alarmed by humanity's repeated rise and expansion into space, abduct an Earth astronaut on his way to Venus to study and analyze the Terran species.

Public domain in the US. From Project Gutenberg.

Topic

SciFi, Fantasy, and Webnovels›Space and adventure science fiction›Aliens and first contact›Alien invasions of Earth

Reader

Adults›SciFi, Fantasy, and Webnovels›Space and adventure science fiction›Aliens and first contact›Alien invasions of Earth