The "Christmas Star" may have historically been when Jupiter and Saturn were in conjunction between Jupiter and Saturn or a conjunction between Jupiter and Venus, according to astronomy.com.

The double planet view is also known by some astronomers as the "Christmas Star" because of a belief that the biblical tale of the Star of Bethlehem could have been a planetary conjunction.

For the first time in 800 years, people will be able to see the “Christmas Star” in the sky when Jupiter and Saturn appear to merge and form a double planet. Jupiter and Saturn conjunctions ...

The rare “Christmas Star” is coming tonight, but the weather may not cooperate. Hopefully there will be some breaks in the clouds for you to get a look. How often do we get a chance to witness ...