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| | Planetary Missions |
 | | Venera 5 USSR - Jan 5, 1969 - Venus Atmospheric Probe Venera 6 USSR - Jan 10, 1969 - Venus Atmospheric Probe Mariner 6 USA - Feb 24, 1969 - Mars Flyby Launched at 01:29:00 UT Used exclusively for planetary data acquisition; no data were obtained during the trip to Mars or beyond Mars. |
 | | Venera 9 USSR - Jun 8, 1975 - Venus Lander Landing occurred on Oct 22, 1975 at 5:13 UT. Viking 1 USA - Aug 20, 1975 - Mars surface studies Viking 1 arrived at Mars on June 19, 1976. |
 | | Ulysses USA - Oct 6, 1990 - Solar systems astrophysics Launched at 11:47:16 UT from Space Shuttle Discovery It is investigating the properties of the solar wind and the interplanetary magnetic field, of galactic cosmic rays and neutral interstellar gas. |
| www.leelehman.com /planets.html (1583 words) |
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