New Milky Way Map Created; Shows Two Fewer Main Arms
National Geographic - June 3, 2008
Milky Way loses two arms
MSNBC - June 4, 2008
Metaphors...
I've always seen this image as a handle opening
a hatch or door of a spaceship or submarine.
I also associate it with breaking the Hermetic Seals.
Milky Way Galaxy - MWG (man, woman reversed, G is 4 Galaxy, also Stargate, Eye)
Zarathrustra, Zoroaster, Z in a bubble, center, or hub of the galaxy