On December 21, Jupiter and Saturn will come together in a “Great Conjunction” unlike any seen in nearly 800 years. The two planets will appear so close together in Earth’s night sky on winter solstice that they’ll almost look like a single object.
That’s prompted some to dub the sight a "Christmas Star," and others to wonder about a similar sounding celestial event that coincided with the biblical first Christmas: the Star of Bethlehem. But did such a cosmic sight ever really exist? And if so, what does astronomical science tell us about what could have caused it?
Interestingly, there’s some evidence that a pair of planetary conjunctions — not unlike the coming Great Conjunction — happened around the historically accepted time frame for the birth of Christ. That could potentially explain the Star of Bethlehem. But, of course, not everyone agrees with the idea.
