events
A great conjunction of Jupiter and Saturn occurs, with the two planets separated in the sky by 0.1 degrees. This is the closest conjunction between the two planets since 1623.
Related Wikipedia articles
Great conjunction
Conjunction of the planets Jupiter and Saturn
A great conjunction is a conjunction of the planets Jupiter and Saturn, when the two planets appear closest together in the sky. Great conjunctions occur approximately every 20 years when Jupiter "overtakes" Saturn in its orbit. They are named "great" for being by far the rarest…Source: Wikipedia (CC BY-SA)
Jupiter
Fifth planet from the Sun
Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass more than 2.5 times that of all the other planets in the Solar System combined and slightly less than one-thousandth the mass of the Sun. Its diameter is 11 times that of…Source: Wikipedia (CC BY-SA)
Saturn
Sixth planet from the Sun
Saturn is the sixth planet from the Sun and the second largest in the Solar System, after Jupiter. It is a gas giant, with an average radius of about 9 times that of Earth. It has an eighth the average density of Earth, but is over 95 times more massive. Even though Saturn is…Source: Wikipedia (CC BY-SA)
December 21
Day of the year
December 21 is the 355th day of the year in the Gregorian calendar; 10 days remain until the end of the year.Source: Wikipedia (CC BY-SA)