Looking for a unique way to mark the days of the Advent season? The Web site Boston.com offers an Advent calendar composed of images from the Hubble Telescope, both old and new. Each day, from now until the celebration of the Nativity of Christ, the calendar will offer a beautiful image from the heavens above.The connection between Advent and NASA images might seem odd. However, the calendar offers us a chance to marvel at the wonders of God's works as we anticipate the coming of his Son. For as Psalm 19:1 says, "The heavens declare the glory of God."