How were the names of the planet decided upon?

1 Answer

The Romans named these planets according to their movements and appearence. These Roman names were adopted by European languages and culture and became standard in science.

Explanation:

The planet names are derived from Roman and Greek mythology, except for the name Earth which is Germanic and Old English in origin. The five planets easily visible with the unaided eye (Mercury, Venus, Mars, Jupiter, and Saturn) have been observed for all human history as far as we can tell, and they were called different things by different cultures.