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| | Mariner -- Encyclopædia Britannica (Site not responding. Last check: 2007-10-07) |
 | | Mariners 2 (launched 1962) and 5 (1967) passed Venus within 35,000 and 4,000 km (22,000 and 2,500 miles), respectively, and made measurements of temperature and atmospheric density. |
 | | Mariners 4 (1964), 6 and 7 (1969), and 9 (1971) obtained striking photographs of the Martian surface and made significant analyses of the atmosphere of that planet. |
 | | Mariners 4 (1964), 6 and 7 (1969), and 9 (1971) obtained striking photographs of the Martian... |
| www.britannica.com /eb/article?tocId=9050952&ref=news0105 (848 words) |
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