In the Orthodox Church, the Star of Bethlehem is not interpreted as an astronomical event, but rather as a supernatural occurrence, whereby an angel was sent by God to lead the Magi to the Christ Child. This is illustrated in the Troparion of the Nativity:
Apolytikion: (Fourth Tone)In Orthodox icons, the Star of Bethlehem is often depicted not as golden, but as a dark aureola, a semicircle at the top of the icon, indicating the Uncreated Light of Divine grace, with a ray pointing to "the place where the young child lay" (Matt 2:9). Sometimes the faint image of an angel is drawn inside the aureola.
Your birth, O Christ our God,
dawned the light of knowledge upon the earth.
For by Your birth those who adored stars (i.e. Magi)
were taught by a star
to worship You, the Sun of Justice,
and to know You, Orient from on High.
O Lord, glory to You.
-from OrthodoxWiki - Magi