The first images from the surface of Venus were received after the Soviet spacecraft Venera 9 landed on the planet.
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The Mariner 2 space probe completed the first-ever flyby of Venus.
Pioneer Venus Orbiter, or Pioneer 12, sent its last transmission as it fell from its orbit around Venus.
After a four-month journey, the Venera 14 spacecraft landed on Venus.
Russian spacecraft Vega 2 landed on Venus.
Instruments used to observe Venus found two-thirds of the planet's southern hemisphere brightened after aerosols were triggered on an 'astronomical' scale.
