What was the first portion of the Milky Way to form?
1 Answer
Dec 30, 2015
The center.
Explanation:
The part of the Milky Way that (most likely) formed first was the center as there was more mass present and gravity did its magic. A supermassive black hole with a mass of 4 million Suns formed. This also explains why the center of our Milky Way is denser than the outer arms.