Beginning with August, 3 B.C., and ending December, 2 B.C., a number of planetary and stellar phenomena occurred which could not but have excited observers.
Beginning with August 1, 3 B.C., the planet Jupiter became visible above the eastern horizon as a morning star. 12 days later, a little before 4 a.m., Jupiter would have been in close conjunction with Venus (already a morning star for 6 months), and the space between them was just about 0.08 degrees, though the planets did not appear to touch one another (a rare phenomenon indeed). Some five days later, Mercury emerged from the Sun also to become a morning star. While this was happening, Venus left its previous conjunction with Jupiter and headed toward Mercury.
On the morning of September 1, Venus and Mercury came into conjunction (.35 degrees from each other; it must be kept in mind that these planetary motions and relationships are the apparent ones viewed by observers on earth).
After the Sept. 1 meeting with Mercury, Venus journeyed back into the light of the Sun, emerging in the West as an evening star about December 20, 3 B.C., and when this happened, an observer would have witnessed the planet just after sunset moving progressively higher in the sky (going more easterly) with each succeeding day. This movement placed Venus on a collision course with Jupiter which was moving westward. At the period when Venus had just passed its easternmost elongation from the Sun (the farthest east of the Sun that Venus ever reaches) on June 17, 2 B.C., the two planets "collided". They were in 0.04 degrees away from each other.
This was a most uncommon occurrence. To an observer on Earth, the luminosity that each planet displayed made them look like one gigantic star. It was as if Venus had stretched herself as far eastward as she was able, in order to join with Jupiter as he reached westward to meet her. This conjunction occurred at the exact time of the full Moon. The whole of the evening sky was being illumined from the east by the full light of the Moon, while the western quarter was being adorned with the Jupiter/Venus conjunction.
Professor D.C. Morton, Senior Research Astronomer at Princeton University, said this conjunction of June 17, 2 B.C., was a notable astronomical event (ZPEB, vol. I, pg. 398). Such closeness had not been witnessed in generations. Roger W. Sinnott, writing in the astronomical journal Sky and Telescope, December, 1968, pps. 384-386, referred to this conjunction as a brilliant "double star" which finally gave the appearance of fusing together into a single "star" as the planets drew nearer the western horizon. He said that only the sharpest of eyes would have been able to split them and that the twinkling caused by the unsteady horizon atmosphere would have blended them into one gigantic "star" for almost all viewers. "The fusion of two planets would have been a rare and awe-inspiring event" (pg. 386). Here were the two brightest planets in the heavens merging together. This was happening at the period when Venus was approaching her time of greatest brilliance.
This splendid conjunction was only half the picture. While Jupiter was on its westward journey to link up with Venus for the spectacular June 17, 2 B.C., reunion, Jupiter was showing some displays of its own. Just 33 days after the first Jupiter/Venus conjunction (August 12, 3 B.C.), an observer would have seen Jupiter come into juxtaposition with Regulus (the principal star in the constellation of Leo, a star of the 1st magnitude). The conjunction occurred on September 14, 3 B.C., and viewed from the Earth the two celestial bodies were 0.67 degrees apart.
After that, Jupiter proceeded on his normal course through the heavens, and on December 1, 3 B.C., the planet stopped its motion through the fixed stars to begin its annual retrogression. In doing so, it headed once again towards the star Regulus. Then on February 17, 2 B.C., the two were reunited (1.19 degrees apart). Jupiter was again side by side with the star, the two bodies being 1.06 degrees from each other (for Jupiter to unite with Regulus 3 times in 1 year is not common. It occurred 12 years earlier in 15/14 B.C., and before that in 86/85 B.C. It was not to recur until 69/70 A.D.). After this 3rd conjunction with Regulus, Jupiter continued moving westward for 40 days (in an apparent sense) to reunite with Venus in the rare conjunction of June 17, 2 B.C.
This is not all. On August 27, 2 B.C., the planet Mars, which had played no active part in the conjunctions, "caught up" with Jupiter and formed a very close union (Mars travels faster in its motion through the stars than Jupiter and overtakes it in a little over 2 years). At this conjunction the two were only 0.09 degrees from each other. Such nearness is not an ordinary occurrence. Besides this, there was also a convergence of Venus and Mercury into the same part of the sky as Jupiter and Mars.
This means that four major planets were all positioned around one another in an exceptional longitudinal relationship. An assemblage of planets in such close proximity to one another is called in astrological circles a massing of the planets. And look at the close association they had to each other. The longitude of Jupiter was 142.6 degrees, Mars 142.64, Venus 141.67, and Mercury 143.71. This would have been an interesting sight to behold, but the visible effect would have been diminished because of the rays of the dawn, since the four planets were only 8 degrees ahead of the Sun.
The year 3/2 B.C. was certainly an extraordinary one for visible astronomical exhibitions, as there was no year similar to it for many years on either side (a foretaste had occurred back in 7 B.C., as Jupiter and Saturn had come into conjunction on 3 occasions: May 26, October 3, and December 1, and this was followed in early 6 B.C. with a close triangulation with Mars, Jupiter, and Saturn. This occurred when the planets were in Pisces. These conjunctions are the ones some present-day historians feel were connected with the signs indicated by Matthew in his account of the birth of the Messiah. The majority will not look this side of 4 B.C. due to the fixation with the 4 B.C. date for the death of Herod).
The year 3/2 B.C. stood far above any near contenders for a period of exceptional signs in the heavens to herald the Messiah's birth (Genesis1:14).
Jupiter’s interesting behavior may explain the kingly aspect of the Star. But there are nine qualifications of the Star of Bethlehem. Many are still missing. How did Jupiter’s movement relate to the Jewish nation? Is its association with the Jewish New Year enough? Where is an indication of a birth? Some might say that the triple conjunction by itself would indicate to a magus that a new king was on the scene. Maybe. But there is more.
The Jewish nation is composed of twelve ancient tribes. Jewish prophecy states that a particular tribe will bring forth the Messiah: the tribe of Judah. The symbol of Judah’s tribe is the lion. You can see these connections in an ancient prediction of Messiah’s coming found in the first book of the Bible, the Book of Genesis, Chapter 49:
9 You are a lion’s cub, O Judah; you return from the prey, my son. Like a lion he crouches and lies down, like a lioness– who dares to rouse him?10 The sceptre will not depart from Judah, nor the ruler’s staff from between his feet, until he comes to whom it belongs and the obedience of the nations is his.— GENESIS 49:9-10
This association of Messiah with the tribe of Judah and with the lion is a productive clue. It clarifies the connection between Jupiter’s behavior and the Jewish nation, because the starry coronation—the triple conjunction—occurred within the constellation of Leo, The Lion. Ancient stargazers, particularly if they were interested in things Jewish, may well have concluded they were seeing signs of a Jewish king. But there is more.
The last book of the New Testament is, in part, a prophetic enigma. But a portion of the Book of Revelation provides clear and compelling guidance for our astronomical investigation. The apostle John wrote the book as an old man while in exile on the island of Patmos. Perhaps the austerity of this exile or a lack of companionship left him time to ponder the night sky. Whatever the reason, Revelation is full of star imagery. InRevelation, Chapter 12, John describes a life and death drama played out in the sky: the birth of a king.
1 A great and wondrous sign appeared in heaven: a woman clothed with the sun, with the moon under her feet and a crown of twelve stars on her head. 2 She was pregnant and cried out in pain as she was about to give birth. 3 Then another sign appeared in heaven: an enormous red dragon with seven heads and ten horns and seven crowns on his heads. 4 His tail swept a third of the stars out of the sky and flung them to the earth. The dragon stood in front of the woman who was about to give birth, so that he might devour her child the moment it was born. 5 She gave birth to a son, a male child, who will rule all the nations with an iron sceptre…— REVELATION 12:1-5
A woman in labor, a dragon bent on infanticide and a ruler of the nations. We have already seen this ruler in the Book of Genesis, above. This would be the Messiah, in his role as King of Kings. If that interpretation is correct, then according to the gospel story the woman would be Mary, the mother of Jesus. The dragon which waits to kill the child at birth would be Herod, who did that very thing. John says the woman he saw was clothed in the Sun. She had the moon at her feet. What can he be describing? When we continue our study of the sky of September of 3 BC, the mystery of John’s vision is unlocked: he is describing more of the starry dance which began with the Jewish New Year.
As Jupiter was beginning the coronation of Regulus, another startling symbol rose in the sky. The constellation which rises in the east behind Leo is Virgo, The Virgin. When Jupiter and Regulus were first meeting, she rose clothed in the Sun. And as John said, the moon was at her feet. It was a new moon, symbolically birthed at the feet of The Virgin.
The sheer concentration of symbolism in the stars at this moment is remarkable. These things could certainly lead our magus to conclude that a Jewish king had been born. But even this is not the whole story. These symbols could indicate a birth, but if they were interpreted to indicate the time of conception, the beginning of a human life, might there be something interesting in the sky nine months later? Indeed. In June of 2 BC, Jupiter continued the pageantry.