NASA launched the first-ever active repeater communications satellite.
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Apollo 10 was launched from the John F. Kennedy Space Center on a mission to the Moon.
NASA launched the Pioneer 11 space probe to study the asteroid belt & the environment around Jupiter and Saturn.
The US Mariner 9 was launched – it went on to become the first satellite to orbit Mars.
A Chinese Long March rocket launched the Belarussian government's Belintersat-1 satellite into orbit.
The USSR's Venera 16 probe was launched from the Baikonur Cosmodrome on a trip to Venus.
