A crescent moon (R) is seen with the planet Jupiter in the sky over Amman December 1, 2008. Astronomers and star gazers across the world are keeping watch on Monday night for a rare astronomical phenomenon as two of the brightest naked-eye planets, Venus and Jupiter, join a thin crescent moon to create a brief "unhappy face" in the sky in this photo. On Monday night, Venus and Jupiter appeared closest together in an event known as "Planetary Conjunction". [Agencies]