We can see similarities and paralellity in Greek, Norse, Roman Egyptian and Sumerian gods.
Who were these gods and titans?
As far as I know the stars were named after gods by Romans, but could they name the stars after their properties? For example name Neptune as "Neptune" while it indeed looks blue like water, and Neptune is the god of sea. By that time they had no methods to see the stars up close until the renaissance age as far as I know. Not to mention all the astrological symbolism.
Anyway, what do you think, what do you know about them? Were these gods real entities, some kinda beings? Or just pilosophical concepts?
If they were just philosophical archetypes, why do all the above mentioned nations have basically the same gods (only the name is different)?
Like:
Zeus=Jupiter=Indra=Thor