“I heard something really unusual was supposed to happen with Jupiter and Saturn right before Christmas. What?”

Answered by Brian Tonks – BYU-I daho Astronomy Professor The ancients noticed that seven celestial objects move relative to the stars: the Sun, the Moon, and the five visible planets (the word “planet” comes from the Greeks meaning “wanderer”—the Greeks knew them as wandering stars). Astrologers attributed special meaning to these objects. It is clear…