Is the Christmas story true? An astronomer has sought to explain one of the mysteries of the nativity scene. But how much of the Bible is true, and how much does that matter?
Nasa wise man ‘finds Star of Bethlehem’
Guiding light: It is written in the Bible that when the wise men "saw the star, they rejoiced exceedingly with great joy". Glossary
Nasa - The National Aeronautics and Space Administration, responsible for the US space programme.
Comet - Consisting mainly of dust, ice and gas, comets also orbit the Sun, with tails that can be millions of miles long.
Crucified - Nailed to a cross.
Gospels - The first four books of the New Testament — Matthew, Mark, Luke and John — which describe the life, teachings, death and resurrection of Jesus.