Moloch, Chiun and Remphan are all names for the star god, Saturn, whose symbol is a six-pointed star formed by two triangles. Saturn was the supreme god of the Chaldeans. The hexagram was brought to the Jewish people by Solomon when he turned to witchcraft and idolatry after his marriage to Pharaoh's daughter in 922B.C.
As far as I know there is no archaeological proof for these claims. In fact In Hebrew the six-pointed star is called Magen David which means: Shield of David. Judaism does not make any connection between the Israeli national emblem and stars. Star of David is the name of the hexagram in Non-Jewish cultures.
It seems to me that Non-Jews connect this shape to star worship (condemned in the Bible) only because they know it by its Non-Jewish name.