Strangely I never really thought on how stars are formed. Ignorance corrected.

Still my online search for subconscious came out very nothing.

Except the myth part. I tried "buried parts of psyche" keywords:
Death, Burial, and the Afterlife in Ancient Greece | Essay | Heilbrunn Timeline of Art History | The Metropolitan Museum of Art

In the Odyssey, Homer describes the Underworld, deep beneath the earth, where Hades, the brother of Zeus and Poseidon, and his wife, Persephone, reigned over countless drifting crowds of shadowy figures—the “shades” of all those who had died.