Was the Star of Bethlehem a planetary conjunction? Comet? NASA talks possibilities

NASA astronomer Dr. Henry Throop talks about what the Star of Bethelehem, aka Christmas Star, could have been in the lead up to the great conjunction of Saturn and Jupiter on Dec. 21. -- Jupiter and Saturn swing by the moon this week ahead of a 'Great Conjunction': https://www.space.com/jupiter-saturn-moon-near-moon-great-conjunction-2020 Credit: NASA