Astronomy: "the distribution of the stars." The Babylonians were first to discover it through [the teaching of?] Zoroaster. With them was Ostanes. They established that what occurs at birth is caused by celestial movement. The Egyptians and Greeks came after these men, and they trace those who are born back to movement of the stars.
Also, there is the phrase "to judge by the stars": for those who travel a long and solitary path, and by the stars are led back to the place of their homeland.
And the word, "starry": one who comes from the stars.
Magic and astrology originated from the Magouseans, for the Persians are actually called Magog by the locals, and these are the same as the Magouseans.
Ἀστρονομία: ἡ τῶν ἄστρων διανομή. πρῶτοι Βαβυλώνιοι ταύτην ἐφεῦρον διὰ Ζωροάστρου· μεθ' ὧν καὶ Ὀστάνης· οἳ ἐπέστησαν τῇ οὐρανίᾳ κινήσει τὰ περὶ τοὺς τικτομένους συμβαίνειν· ἀφ' ὧν Αἰγύπτιοι καὶ Ἕλληνες ἐδέξαντο καὶ τοὺς γεννωμένους ἀναφέρουσιν εἰς τὴν τῶν ἀστέρων κίνησιν.
καὶ Ἄστροις τεκμαίρεσθαι, ἐπὶ τῶν μακρὰν καὶ ἔρημον ὁδὸν πορευομένων καὶ ἄστροις σημειουμένων τὰς θέσεις τῶν πατρίδων.
καὶ Ἀστρῷος, ὁ ἐκ τῶν ἄστρων.
ὅτι μαγεία καὶ ἀστρολογία ἀπὸ Μαγουσαίων ἤρξατο. οἱ γάρ τοι Πέρσαι Μαγὼγ ὑπὸ τῶν ἐγχωρίων ὀνομάζονται. καὶ Μαγουσαῖοι, οἱ αὐτοί.
Suda, s.v. Ἀστρονομία (α-entry 4257)