IT'S A PICKLE: LEARN ABOUT HOW GALAXIES FORM
Her 2+ey Space Placers! Have you ever wondered about how galaxies form and evolve? We live in the Milky Way Galaxy, one of 2+ TRILLION known galaxies in the observable Universe. Galaxies form and evolve over billions of years. This is a LONG but easy to understand and insightful article written by an astrophysicist about his research into how galaxies form and evolve under the influence of dark matter. His ongoing research shows that galaxies seem to start out as "cosmic pickles" and evolve. This computer simulation shows the evolution of particles representing stars. Note that after a number of stars have formed, the galaxy is “pickle” shaped—long, thin, and not rotating. A few satellite galaxies enter the visualization volume and merge with the central galaxy, but they do so along the main axis of the galaxy, so it continues to be long and thin. These images are all in the first (pre-"blue-nugget") stage of the evolution of this galaxy. Then the cente...