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The daily turning of most of the planets on their own axes is slightly wobbly, made so by the gravity of their satellites, or moons. Earth and Neptune each have one moon. Mars has two, Uranus four, Saturn and Jupiter each nine. All the moons, like their planets, are visible by reflected Sun light. They move around their planets in the same direction as the planets turn on their polar axes. Exceptions are Saturn's moon called Phoebe and one of Jupiter's. Jupiter may have, also, a second contrary moon.
*Visible to the naked eyes of ancients were Mercury Venus, Mars, Jupiter and Saturn. Although Aristarchus of Samos in the 3rd century B.C. had theorized that the planets revolved about the Sun, not until Nicolaus Copernicus (1473-1543) did the World cease believing that they together with the Sun and Moon, both of which were considered planets, turned around the Earth.
*Astrologers are professionally joyous over the New Planet's discovery. They blame all their fortune mistellings on its obscurity, now talk of greater accuracy.
*Another theory holds that the Sun exploded the passing star, whose bits became the planets and planetoids.
†The generally accepted view. However Mercury and Venus may also be retrograde.