They sat still and felt the canal water rush cool, swift, and glassy.
Ray Bradbury: Martian Chronicles (1950)
In the beginning of the twentieth century the Martian channels vanished into thin air, and Mars turned out to be an arid world. This view was confirmed in the 1960s when the first probes sent images of desolate plains covered with craters reminiscent of the Moon. The pendulum swung in the opposite direction in the early 1970s, when Mariner 9 photographed the true channels of the Red Planet. There had been water on Mars after all, lots of water.
KeywordsMartian Atmosphere Mars Global Surveyor Mars Reconnaissance Orbiter Mars Orbit Laser Altimeter Crater Count
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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