Science · 1976 · 92 citations · 17 references
Natural SciencesEarth SciencesPlanetary AstronomyPlanetary GeologyPlanetary ScienceLandscape PhotographyMartian GeologyPlanetary GeomorphologyPlanetary LandformsPlanetary Surface ProcessesPlanetary SurfacesCamerasImpact Cratering On MarsImpact CratersLandingMars LandingMartian Aeolian ProcessesMartian Impact CrateringStereoscopic Visualization
The first photographs ever returned from the surface of Mars were obtained by two facsimile cameras aboard the Viking 1 lander, including black-and-white and color, 0.12 degrees and 0.04 degrees resolution, and monoscopic and stereoscopic images. The surface, on the western slopes of Chtyse Planitia, is a boulder-strewn deeply reddish desert, with distant eminences-some of which may be the rims of impact craters-surmounted by a pink sky. Both impact and aeolian processes are evident. After dissipation of a small dust cloud stirred by the landing maneuvers, no subsequent signs of movement were detected on the landscape, and nothing has been observed that is indicative of macroscopic biology at this time and place.
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Variable features on Mars: Preliminary mariner 9 television results
Carl Sagan, Joseph Veverka, Paul L. Fox et al. · Icarus · 1972 · 159 citations
Natural Sciences, Aerospace Engineering, Planetary Science +7
Variable features on Mars, 2, Mariner 9 global results
Carl Sagan, J. Veverka, Paul L. Fox et al. · Journal of Geophysical Research Atmospheres · 1973 · 149 citations
Composition and Structure of the Martian Atmosphere: Preliminary Results from Viking 1
A. O. Nier, W. B. Hanson, A. Seiff et al. · Science · 1976 · 138 citations
Preliminary Results from the Viking Orbiter Imaging Experiment
M. H. Carr, H. Masursky, W. A. Baum et al. · Science · 1976 · 95 citations