Word: marse
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Dates: during 1960-1969
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Five days later, if all goes well, Mariner 7, a second Mars probe, will make a sweep across the south polar regions of the planet, shooting closeup photographs of the white polar cap and areas that appear to change color seasonally. Mariner 7 is scheduled to be launched on March...
Between them, the two probes should photograph about 20% of the surface of Mars, compared to the 1% covered by Mariner 4. In addition, batteries of instruments aboard the spacecraft will measure surface temperatures and analyze the composition of the atmosphere and of the south polar ice cap.
Spring Vegetation? Sophisticated as they are, Mariners 6 and 7 will at best be able to determine only the possibility of life on Mars. Their cameras, which can pick out features twelve times smaller than Mariner 4 could see, will nonetheless be unable to distinguish objects less than 900 ft...
More definitive answers will have to await the four additional Mars probes now planned by NASA. In 1971, during the next close approach of Mars, the U.S. will send two photographic spacecraft into orbit around the planet for at least 90 days each. The orbiters will take a series of...
But the riddle of life on Mars will probably not be solved until at least 1973, when versatile "Project Viking" capsules ejected from still another pair of orbiting spacecraft are scheduled to make soft landings on the surface of the planet. In a search for any obvious evidence of life...