Names of the Greeks wholly different term came to establish itself in the East. The ancient people of the Middle East referred to the Hellenes as "Yunan", deriving from Persian "Yauna", itself a loan of Greek Ιωνία (Ionia), the western coast of Asia Minor. It is by affiliation with the Ionian tribe the Persians conquered in the late 6th century BC that their name extended to all Hellenes. All peoples under Persian influence adopted the term, and it is from this root that Sanskrit "Yavana" derives, which one encounters in ancient Sanskrit sources, first attested in Pāṇini's grammar, and later referring, together with Pali
Ancient Greek astronomy find remarkable information such as that the Earth is round, it has an axis and it moves around it in one day, it has three climate zones and that the Sun magnetizes the Stars and planets. The name "planet" comes from the Greek term πλανήτης ("planētēs"), meaning "wanderer", as ancient astronomers noted how certain lights moved across the sky in relation to the other stars. Five planets can be seen with the naked eye: Mercury, Venus, Mars, Jupiter, and Saturn, the Greek names being Hermes, Aphrodite, Ares, Zeus and Cronus. Sometimes the luminaries, the Sun and Moon, are added to