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... mission. In the extended mission, the two landers would continue photographing the sites at Chryse Planitia and Utopia Planitia and transmitting data to earth; their biology instruments had been shut down earlier see ...

... Viking 1 lander touched down safely on a plain at the western edge of the Chryse region of Mars at 7:53 am EDT, 11 mo to the day after its ... , and terminal descent engines braked the descent to the surface of Mars. The site at Chryse Planitia was chosen for the landing after Viking spacecraft Viking orbiter data and the giant telescope ...

... developed a leak during the final analysis of soil from a deep trench at the Chryse Planitia landing site, NASA reported. Failure of the gas-exchange package, designed to detect respiration in ...

... , 1996. After a 7-month voyage it landed on Ares Vallis, in a region called Chryse Planitia on Mars, on 4 July 1997. The Sojourner rover was then deployed from the lander ...

... volcanism throughout the last several hundred million years covered most of the surface of Elysium Planitia, and this buried evidence of Mars' older geologic history, including the source and most of ... is similar to more ancient channel systems on Mars, especially those of the Chryse basin. Many scientists think the Chryse channels likely were formed by the catastrophic release of ground water, ...

... Planitia (the Utopian plains) above which the air was found by Viking spacecraft 1 Viking 1 's orbiter to contain 5 to 10 times as much water as that over the Chryse area where Viking spacecraft 1 Viking 1 landed. A surface sample of Chryse itself dug by a mechanical arm was found to ...

... . Masursky of the U.S. Geological Survey, chief geologist for Viking spacecraft Viking , said that Chryse resembled California's Death Valley or the water-worn dry valleys of Nevada or Wyoming ... clearly. The New York Times reported that the first alternative site was an area called Chryse Phoenicia, a basin about 30 km northwest of the original site; if that site appeared ... the Post 29 June. Photographs released 29 June at JPL showed a plateau in the Chryse valley originally picked as the Viking spacecraft 1 Viking 1 landing site, where a curving ...

... would land 17 July in a site called the "Northwest Territory" on the Plain of Chryse that would be safer than the original choice, said Project Manager James S. Martin, Jr ... 40 photos released by JPL showed the plains area more hospitable than the Valley of Chryse, which turned out to be a network of dry riverbeds too steep and too rough ... smooth landing site. Radar echoes, which had revealed dunes or boulders on the Plains of Chryse invisible to the Viking spacecraft Viking cameras, showed the plateau to be "twice as smooth ...

... 1 's three biological instruments repeated their samplings of Mars soil from the plain of Chryse, with ambiguous results. The experiment that used' nutrients to detect life processes in the soil ... in similar regions on earth. Bitterly cold temperatures on the Utopia plains-warmer than at Chryse, where the nights were longer-were no colder than Arctic or Antarctic temperatures at night ...

... 1 's lander would remain in standby mode after its weeks of testing at the Chryse site. Project scientist Dr. Gerald A. Soffen, commenting on the confusing results of the Viking ... daytime. (The first results of the same experiment on Viking spacecraft 1 Viking 1 at Chryse had showed the soil was releasing six times as much gas as it would have ... at Utopia, where five times more water had been measured in the air than at Chryse. They also planned to reduce chances of ambiguity in the Utopia readings by conducting the ...

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