Mars twenty years later

Details Mars twenty years later Mars twenty years later

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976newsc..72..442k&link_type=abstract

New Scientist, vol. 72, Nov. 25, 1976, p. 442-445.

Biology

Mars Atmosphere, Mars Surface, Viking Mars Program, Aerology, Data Acquisition, Exobiology, Mars (Planet), Mars Photographs, Mars Surface Samples, Mission Planning, Planetary Composition, Planetary Structure, Seismology

Scientific paper

Hard data obtained with the aid of the Viking Mars landings are compared to informed speculation ventured in the pages of the first issue of the publication two decades ago. Views held in 1956 on the nature of the Martian atmosphere, on Martian topography, on the amount of water retained by the areological surface, and life forms, are contrasted to the current data. Viking lander instruments and seismic data are discussed briefly. The significance of the position of Mars intermediate between the earth and its moon in size, surface area presented for meteoritic impact, and weight is pointed out, and the possibility of Mars possessing quantities of water and gas in the past, or retaining, for some period, fluids introduced by cometary impacts, is considered.

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