Twelve new moons were discovered in Jupiter’s orbit, bringing the planet’s total number of moons to 79.
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Many volcanoes were discovered on one of planet Jupiter's moons called Io.
The US spacecraft Pioneer 10 launched.
A conjunction of Sun, Mercury, Venus, Mars, Jupiter, Saturn, and the Moon occurred.
NASA launched the Pioneer 11 space probe to study the asteroid belt & the environment around Jupiter and Saturn.
Comet Shoemaker–Levy 9 collides with Jupiter.
