Mercury - Mercury is the first planet in our solar system and the Roman god of travel, commerce, and theft. The Romans named the planet after him, most likely because of how fast it revolves around the Sun.
Venus - The second planet Venus is named after the Roman goddess of love and beauty because it shines brightest in the night sky and is the most visible planet on Earth. It is the only planet named after a goddess and not a deity.
Earth - Earth is the most remarkable planet in our Solar System. Interestingly, it isn’t named after a Roman god. Its name comes from the old English and German word meaning ‘dirt’ or ‘ground’.
Mars- The red planet is named after the Roman god of war thanks to its fiery appearance. Its two moons, Phobos and Deimos, are also appropriately named after Roman gods – the gods of fear.
Jupiter - Jupiter is the largest planet in our solar system and is a gas giant – like the king of all the planets. So it was reasonable to name him after the king of Roman gods.
Saturn - The sixth planet in the solar system and the biggest planet with rings is named after the Roman god of agriculture and wealth.
Uranus - Another astronomer Johann Elert Bode named it after the Greek god of the sky, Uranus, because of its sky-blue color.
Neptune - German astronomer Johann Galle confirmed its existence and wanted to name it after the two astronomers, but Le Verrier suggested naming it after the Roman god of the sea.