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2. 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.

3. Viking 1 - Wikipedia

   en.wikipedia.org/wiki/Viking_1

   The Viking 1 Orbiter was inserted into Mars orbit on June 19, 1976, [8] and trimmed to a 1,513 x 33,000 km, 24.66 h site certification orbit on June 21. Landing on Mars was planned for July 4, 1976, the United States Bicentennial, but imaging of the primary landing site showed it was too rough for a safe landing. [9]

4. Viking lander biological experiments - Wikipedia

   en.wikipedia.org/wiki/Viking_lander_biological...

   Schematic of the Viking Lander Biological Experiment System. In 1976 two identical Viking program landers each carried four types of biological experiments to the surface of Mars. The first successful Mars landers, Viking 1 and Viking 2, then carried out experiments to look for biosignatures of microbial life on Mars. The landers each used a ...

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 Mars orbiters - Wikipedia

   en.wikipedia.org/wiki/List_of_Mars_orbiters

   Contact with all eight Mars orbiters launched during the 20th century has been lost. NASA's four spacecraft are conjectured to remain in Mars' orbit. Mariner 9, Viking 1 and Viking 2 are expected to lower down into the Martian atmosphere by 2022 and either burn up or crash into the planet's surface. [2]

7. Exploration of Mars - Wikipedia

   en.wikipedia.org/wiki/Exploration_of_Mars

   The Viking program launched Viking 1 and Viking 2 spacecraft to Mars in 1975; The program consisted of two orbiters and two landers – these were the second and third spacecraft to successfully land on Mars. In 1976, Viking 1 and Viking 2 touched down on the Martian surface. These landers were significantly larger than the Soviet Mars 3 lander ...

8. Mars Retrograde Is Finally Over—Here’s What Happens Next

   www.aol.com/mars-retrograde-finally-over-happens...

   Destructive, combative Mars is ending an 11-week retrograde February 23. ELLE's resident astrologers, the AstroTwins, explain what comes next.

9. More than 100 Viking cruise passengers get sick in norovirus ...

   www.aol.com/more-100-viking-cruise-passengers...

   More than 100 Viking passengers became sick during a recent cruise, the Centers for Disease Control and Prevention said. The public health agency said 110 of the Viking Neptune ship’s 838 guests ...