You know how were the planets named? Read This

India
January 22, 2007 2:03am CST
All of the planets, except for Earth, were named after Greek and Roman gods and godesses. Jupiter, Saturn, Mars, Venus and Mercury were given their names thousands of years ago. The other planets were not discovered until much later, when telescopes were invented. The tradition of naming the planets after Greek and Roman gods and goddesses was carried on for the last three planet discovered as well. Mercury was named after the Roman god of travel. Venus was named after the Roman goddess of love and beauty. Mars was the Roman god of War. Jupiter was the king of the Roman gods, and Saturn was the Roman god of agriculture. Uranus was named after an ancient Greek king of the gods. Neptune was the Roman god of the Sea and Pluto, which is now classified as a dwarf planet, was the Roman god of the underworld. The name Earth is an English/German name which simply means the ground. Initially Sir William Herschell, (who is formally recognised as the discoverer of Uranas wanted to name it Georgium Sidus (George's Star) in honour of King George III. However This was not acceptable outside Great Britain and eventually Uranus became the generally accepted name.
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