I don’t know if the model is supposed to be taken literally or if it’s an artist’s interpretation, but I understand it like this:
In the middle of each galaxy is a bright center, which is a condensed star cluster. Galaxies are typically held together by a black hole in the middle, keeping all of the stars within its gravitational pull. The arms of the galaxies are filled with sun-like stars which you can see in the Sombrero Galaxy or Milky Way.
Here’s what’s fascinating to me: the bright center of the universe (according to the model) is like the star cluster of a galaxy, and galaxies are like the stars in the arms of the universe. The universe is like a gigantic galaxy, and there are probably billions of universes out there, creating a mind-bogglingly huge multiverse. Does that make sense, or am I just crazy?
All this to say: Where are our alien friends?
Photo Credit: BBC
Photo Credit: Gizmodo