The Great Conjunction of Jupiter and Saturn: The upcoming great conjunction of Jupiter and Saturn will be December 21, 2020. It'll be their closest conjunction since 1623. On 21 December at 13:30 UT, Jupiter will be 0.1° south of Saturn and 30° east of the Sun, meaning both planets will be visible in the same telescopic field of view. They will appear so close in the sky that for a naked-eye view they may look like a single, bright object. The two planets will be visible low above the southwestern horizon in the constellation of Capricornus after sunset. When studying the great conjunction of 1603, Johannes Kepler thought that the Star of Bethlehem might have been the occurrence of a great conjunction. He calculated that a triple conjunction of Jupiter and Saturn occurred in 7 BCE. A triple conjunction is a conjunction of Jupiter and Saturn at or near their opposition to the Sun. The most recent triple conjunction occurred in 1981, and the next will occur in 2239. Mark your calendar! The 'Great Conjunction' of December 2020 takes place on the day of Earth's winter solstice. Known historically as Great Conjunctions, Jupiter-Saturn conjunctions take place about every twenty years, the last one having been in May 2000. After 2020, they will next meet in November 2040 in the constellation of Virgo, the Virgin. Stay Tuned!