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Kadet wrote:A super Nova maybe?
Dig Gil wrote:In ancient times (when the christmas day was invent) the religious usually used to use sky to mark dates. One last thing: that day isn't the day when Jesus Christ was born, that day represents that only and was set up to fit with another important day for romans. By what I know Jesus born somewhen near spring.
StarLost wrote:(...) As for "What do we know about the stars at christmas day?", actually we know quite a bit. Most current planetarium programs are capable of showing the known sky at that time. Adjusting the time constants will permit you to observe the passage of planetary bodies to see how close they appear to approach each other. (...)
Dig Gil wrote:You mean Celestia?(Sorry, I use a Portuguese version, but I translated and hope used the right terms)
Quick_Nick wrote:I believe that the varying calenders, leapyears, etc. make it a little more difficult to go to the exact date or time of the birth of Jesus. Going to year 0 in a program like Celestia is probably innacurate.
StarLost wrote:I think you are missing a major part of the point. There is no firmly determined date for the Christmas event. What you haveto do is to go back to an arbitrary date prior to Christmas event, say 10 BCE and run the planetarium from that pointforward, observing how the sky changes to see if something could be interpreted as the "star of Bethlehem". What you arelikely looking for is a particular conjunction of planets, though how a planetary conjunction could be interpreted as a new"star" is beyond me. Astronomical observers of that time period new well the difference between planets, stars. and comets.It is doubtful if the writers of the Gospels had any astronomical training, hence their use of literary metaphor.As for choosing a date, Julian dates are just fine. You are going to bracket the time period anyway.