Note written for Sagan's "Viking file" discussing the possibility of life on Mars.
Sagan explains he is concerned about the "somewhat remote" possibility that there might be nocturnal Martian organisms that the Viking Lander might not be able to capture in photographs taken in the dim light o More
Photograph of Carl Sagan standing next to a model of the Viking lander in Death Valley, California.
Handwritten and typewritten voice-over scripts for the initial sequence of episode 5 of Cosmos, "Blues for a Red Planet." These focus on Mars as a "mythic arena" where imaginative science and science fiction ha More
Public domain photograph of a solar system, planet, space exploration, free to use, no copyright restrictions image - Picryl description
In this paper, Sagan reflects on the prospect of finding life on Mars in the wake of the Mariner 9 NASA mission. It reviews historical ideas of evidence for life on Mars and offers suggestions for what future m More