Some stars appear to form definite patterns which are called constellations. Unlike stars, the planets exhibit real observable motion as they journey around the sun with our earth at various distances and speeds. Planets appear to move along a certain band of star patterns or constellations called the Zodiac. The rotation of the earth also causes planets to appear to rise and set easterly to westerly. The bright planets, Venus, Mars, Jupiter and Saturn are often reported as UFOs.
Planets shine with a steadier light than stars.
Although bright stars and planets account for a large segment of reported UFOs, their predictable positions in the sky usually allow for an easy identification by a knowledgeable investigator. A series of charts are provided in Section XI to assist the investigator in this respect.