One of the ways to remember the order of the planets is with a mnemonic device like, "My very eccentric mom just served us nectarines". The first letter of each planet (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune) is also the first letter of each word in the device.
Mnemonic devices that incorporate the dwarf planet Pluto include:
Mnemonic devices are memory aids used to condense complex information into easy-to-recall patterns. Mnemonic devices often work better when they are humorous or illogical.