Twelve new moons were discovered in Jupiter’s orbit, bringing the planet’s total number of moons to 79.
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A conjunction of Sun, Mercury, Venus, Mars, Jupiter, Saturn, and the Moon occurred.
NASA's Galileo spacecraft skimmed by Jupiter's moon, Lo, at just 112 miles (180 km).
The last signal from the Pioneer 10 space probe was received.
Galileo Galilei discovered Callisto, the fourth moon of Jupiter.
Saturn, Jupiter, and Mars came into alignment. Medieval scholars believed this phenomenon brought forth the Black Death.
