13 déc. 1958 - By the 1960s, both optimism and fear about Mars had begun to dwindle.

Description:

The “Face of Mars” (Photo: NASA)
By the 1960s, both optimism and fear about what or who might be living on Mars had begun to dwindle. Mounting scientific evidence of the planet’s harsh, dry surface made it seem unlikely that anything had ever lived there, let alone built a giant system of canals.

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