The modern English word and name for our planet “Earth”, is believed to go back at least 1,000 years. The word “Earth” came from the Anglo-Saxon word “erda” and its Germanic equivalent “erde”, meaning ground or soil. In Old English, the word became “eor(th)e” or “ertha”. There is some speculation that the origins of the word may be from an Indo-European language base “er” which produced modern adaptations of the word used in languages today.
What is certain however is of all the planet’s names, Earth is the only one in the solar system that does not come from Greco-Roman mythology. All the other planets were named after Greek and Roman gods and goddesses.