SAGITTARIUS: November 12-18

Ancient people knew about Mercury, Venus, Mars, Jupiter and Saturn because all of those planets are visible to the naked eye. From the second millennium B.C. until the late 20th century, only three additional planets were found: Uranus, Neptune and Pluto. (Pluto was later reclassified as a dwarf planet.) Then in 1992, astronomers began to locate planets orbiting other stars. On one spectacular day in February 2014, NASA announced it had identified 715 new planets. I foresee a similar uptick for you in the next seven months. Your rate of discoveries is about to zoom.