Jupiter, Saturn to Appear as 'Double Planet' Next Month in ‘Exceptionally Rare’ Event.
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Jupiter, a gas giant with a mass one-thousandth that of the sun, is the fifth planet from the sun and is the largest in the solar system. Saturn, the sixth planet from the sun, is the second-largest in the solar system with an average radius of about nine times that of Earth.

On December 21, Jupiter and Saturn will be close together, or in conjunction, in an extremely rare event, according to a release from Rice University published by Phys.org
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Jupiter, Saturn to Appear as 'Double Planet' Next Month in ‘Exceptionally Rare’ Event - Sputnik International

Jupiter, a gas giant with a mass one-thousandth that of the sun, is the fifth planet from the sun and is the largest in the solar system. Saturn, the sixth planet from...