Inspiration. Inspiration is the step where you decide what sort of character you want to play. I consider this the heart-strings step. You have found something you love to play, something you want to play.
In the end, it comes down to an estimate. In one calculation, the Milky Way has a mass of about 100 billion solar masses, so it is easiest to translate that to 100 billion stars. This accounts for the stars that would be bigger or smaller than our sun, and averages them out.Other mass estimates bring the number up to 400 billion.illions and billions of stars in a galaxy (after a quote often mistakenly attributed to Carl Sagan) is how many people imagine the number of stars you would find in one.
Our sun is 25,000 light years from the center of the Milky Way. The oldest star in the galaxy is 13.2 billion years old. The stellar disk of the Milky Way Galaxy is approximately 100,000 light years in diameter and is about 1,000 light years thick. It is estimated to contain up to 400 billion stars.