According to wikipedia:
In Greek mythology, Aether, Æther, Aither, or Ether (/ˈiːθər/; Ancient Greek: Αἰθήρ (Brightness)[1]pronounced [ai̯tʰɛ̌ːr]) is the personification of the bright upper sky. According to Hesiod, he was the son of Erebus (Darkness) and Nyx (Night), and the brother of Hemera (Day).[2] In Orphic cosmogony Aether was the offspring of Chronus (Time), and the brother of Chaos and Erebus.[3]
アイテール（古希: Αἰθήρ, Aithēr 英: Aether）とは、ギリシア神話に登場する原初神で、天空神である。日本語では長母音を省略してアイテルとも表記する。
以上は、wikipediaから。
According to Oxford languages, orphic /ˈɔːfɪk/: relating to Orpheus or Orphism.
According to wikipedia, Cosmogony is any model concerning the origin of the cosmos or the universe.
以下は、wikipediaから。
オルペウス教（Orphism、Orphicism）は、古代ギリシャ世界における密儀宗教。オルフェウス教とも。
冥界（ハーデース）を往還した伝説的な詩人オルペウスを開祖と見なしている。
Orpheus (/ˈɔːrfiːəs, ˈɔːrfjuːs/; Ancient Greek: Ὀρφεύς, classical pronunciation: [or.pʰeú̯s]; French: Orphée) is a Thracian bard, legendary musician and prophet in ancient Greek religion. He was also a renowned poet and, according to the legend, travelled with Jason and the Argonauts in search of the Golden Fleece, and even descended into the Underworld of Hades, to recover his lost wife Eurydice.[1]