The first images from the surface of Venus were received after the Soviet spacecraft Venera 9 landed on the planet.
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NASA's Atlantis Space Shuttle ferried the Magellan space probe into orbit.
Pioneer Venus Orbiter, or Pioneer 12, sent its last transmission as it fell from its orbit around Venus.
The Mariner 2 space probe completed the first-ever flyby of Venus.
The Soviet Probe Venera 4 entered Venus' atmosphere and sent back information to Earth for about 90 minutes before it lost contact.
NASA Launches Mariner 2.
