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Viking 1 was the first of two spacecraft, along with Viking 2, each consisting of an orbiter and a lander, sent to Mars as part of NASA's Viking program. [2] The lander touched down on Mars on July 20, 1976, the first successful Mars lander in history.
Viking 1 entered Mars orbit on June 19, 1976, with Viking 2 following on August 7. After orbiting Mars for more than a month and returning images used for landing site selection, the orbiters and landers detached; the landers then entered the Martian atmosphere and soft-landed at the sites that had been chosen.
Viking 1 Orbiter and Lander: Mars 20 August 1975 19 June 1976 entered orbit 20 July 1976 landed: 305 days (10 mo) Viking 1 transmitted the first images from the surface of Mars. The Viking orbiter was active until 17 August 1980, the lander until 13 November 1982. [18] [19] Viking 2 Orbiter and Lander: Mars 9 September 1975 7 August 1976 ...
By Eric Sandler On August 20, 1975 -- 39 years ago today -- NASA launched the first of two spacecraft as a part of their new Viking program and the images they captured back in the '70s and '80s ...
The basic time periods from which the calendar is constructed are the Martian solar day (sometimes called a sol) and the Martian vernal equinox year.The sol is 39 minutes 35.244 seconds longer than the Terrestrial solar day, and the Martian vernal equinox year is 668.5907 sols in length (which corresponds to 686.9711 days on Earth).
Viking 1 Orbiter NASA Areocentric: Mars orbiter: In orbit: Successful Viking 1 Lander NASA Areocentric Mars lander: 20 July 1976 11:53:06: Successful Lander landed in Chryse Planitia, becoming the first US spacecraft to land on Mars. It operated until 11 November 1982 when communications were lost due to an erroneous command being sent to the ...
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Vikings 1 and 2, launched in 1949 from White Sands Missile Range in New Mexico, both suffered from premature engine cutoff due to turbine leaks, significantly reducing their maximum altitude. [ 6 ] : 98–102 The improved Viking 3, launched on 9 February 1950, reached 50 mi (80 km) and could have gone higher.
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