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Mercury My Many My Mother Venus Very Very Vicious Veronica Earth Educated Elderly Earthworm Enjoyed Mars Mother Men Might My Jupiter Just Just Just Jam Saturn Served Snooze Swallow Sandwich Uranus Us Under Us Under Neptune Nachos / Noodles Newspapers Now Neptune Our own world seems pretty big to us but we are by no means the largest planet in the solar system. Jupiter has 317 times more mass than Earth and Saturn is 95 times as massive as Earth. But even with those planetary giants, the Sun contains 99.86% of the mass of the entire solar system. Order of planets: Pluto, Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, Jupiter, Sun Pluto is a bit of a puzzle. All the inner planets are small rocky worlds. The outer planets are gas giants. However Pluto, the furthest of the planets from the sun is a small icy rock of a planet. It is almost a double planet system because it is orbited by a large moon, Charon. The discovery of the moon Charon weakened the theory that Pluto is an escaped moon of Neptune. It is now thought that Pluto came from a region of space debris left after the forming of the solar system called the Kuiper Belt.