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Mariner 07
Mariner 7 Mission to Mars

Goals: Identical to Mariner 6, which was launched 31 days earlier, Mariner 7 had the same goal: to study the surface and atmosphere of Mars during a close flyby.

Accomplishments: The Mariner 7 mission benefited from its reprogrammable command system. When scientists, intrigued by Mariner 6's pictures of the Martian south pole, asked that Mariner 7 take extra pictures of that area, controllers were able to comply. The spacecraft took 93 far- and 33 near-encounter images, showing heavily cratered terrain very similar to images recorded by Mariner 6. The south polar cap was identified as mostly carbon dioxide.


Key Dates
27 Mar 1969:  Launch (22:22:01 UT)
5 Aug 1969:  Mars Flyby (05:00:49 UT)
Status: Successful
Fast Facts
Mariner 07 Facts Mariners 6 and 7 were twin spacecraft.

Together they took close up photographs of about 20 percent of the Martian surface.

Mariner 7 found Mars' moon Phobos was irregularly-shaped.
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Last Updated: 30 Nov 2010