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  2. Viking 1 - Wikipedia

    en.wikipedia.org/wiki/Viking_1

    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.

  3. Viking program - Wikipedia

    en.wikipedia.org/wiki/Viking_program

    The Viking 1 lander touched down on the surface of Mars on July 20, 1976, more than two weeks before Viking 2 ' s arrival in orbit. Viking 2 then successfully soft-landed on September 3. The orbiters continued imaging and performing other scientific operations from orbit while the landers deployed instruments on the surface.

  4. Viking 2 - Wikipedia

    en.wikipedia.org/wiki/Viking_2

    The Viking 2 mission was part of the American Viking program to Mars, and consisted of an orbiter and a lander essentially identical to that of the Viking 1 mission. [1] Viking 2 was operational on Mars for 1281 sols (1,316 days; 3 years, 221 days). The Viking 2 lander operated on the surface for 1,316 days, or 1281 sols, and was turned off on ...

  5. Remembering NASA's Viking 1 and the first images from Mars - AOL

    www.aol.com/news/2014-08-20-viking-1-and-the...

    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 ...

  6. List of missions to Mars - Wikipedia

    en.wikipedia.org/wiki/List_of_missions_to_Mars

    Viking 1 lander Lander Successful First successful Mars lander. Deployed from Viking 1 orbiter. Landed on Mars on 20 July 1976. Operated for 2245 sols. 23 Viking 2: Viking 2 orbiter 9 September 1975: NASA United States: Orbiter Successful Operated for 700 orbits. Entered Mars orbit on 7 August 1976. Titan IIIE Centaur-D1T: Viking 2 lander ...

  7. Timeline of astronomy - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_astronomy

    NASA's Viking 1 and Viking 2 space probes arrive at Mars. Each Viking mission consists of an orbiter, which photographs the planet from above, and a lander, which touches down on the surface, analyzes the rocks, and searches unsuccessfully for life.

  8. Spaceflight before 1951 - Wikipedia

    en.wikipedia.org/wiki/Spaceflight_before_1951

    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.

  9. Spirit (rover) - Wikipedia

    en.wikipedia.org/wiki/Spirit_(rover)

    Viking 2 was powered by a nuclear cell whereas Spirit is powered by solar arrays. Until Opportunity overtook it on May 19, 2010, the Mars probe with longest operational period was Viking 1 that lasted for 2245 Sols on the surface of Mars. On March 22, 2010, Spirit sent its last communication, thus falling just over a month short of surpassing ...