On November 28, 2013, Comet ISON will make one of the closest passes ever recorded by a comet as it grazes the Sun, penetrating the million-degree outer atmosphere. If Comet ISON survives that close encounter, it may appear in our morning sky before dawn in early December and become one of the greatest observable comets in recent memory. However, comets are notoriously unpredictable. Will we get a spectacular show? Stay tuned...