I have made two discoveries of "pictures" in the night that are both predicted in the Bible that link directly to Jesus' birth and the start of His ministry. See http://www.scripturescholar.com/VenusStarofBethlehem.htm and http://www.scripturescholar.com/LambofGod.htm
In both cases the planets (wandering stars to the ancients) form pictures in the sky, but dependent on the background constellations for full understanding. In both cases at least two passages of the Scripture one from the Old Testament and one from the New Testament are necessary for discovery and interpretation. In both cases the picture is only visible on one day and only for a few minutes. Both show God is in charge of the making of and the timing of theses signs in the heavens. There could be many similar pictures that have not been discovered.