The Edge of the Galaxy

Screen capture from the game Elite Dangerous. A view of space from the surface of a planet, planetary rings in view and the edge of the Milky Way galaxy in the background.

A screen cap from the game Elite Dangerous. This shot made me curious how the mythology of a civilization might develop at the edge of the galaxy, where the night sky looks somewhat different from ours. What early explanations would people create for an arch in the sky, a ringed planet, a visible nebula, and a giant wedge of light crossing the night sky?

I need to head out into the black again and get a similar picture from a planet ‘below’ the galactic disk. The image of a night sky with an ocean of light above.