Planets Study Guide *Order of the planets from the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune (Use this saying to remember the order of the planets: My very excited mother just sent us news.) *Order of the planets by size from largest to smallest: Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury *The four inner planets are terrestrial: Mercury, Venus, Earth and Mars. *The four outer planets are gas giants: Jupiter, Saturn, Uranus, Neptune. Planets Study Guide *Order of the planets from the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune (Use this saying to remember the order of the planets: My very excited mother just sent us news.) *Order of the planets by size from largest to smallest: Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury *The four inner planets are terrestrial: Mercury, Venus, Earth and Mars. *The four outer planets are gas giants: Jupiter, Saturn, Uranus, Neptune.