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.
For example, thanks to the Kepler telescope, launched in 2009, scientists now know that there are possibly over 3,000 planets orbiting over 2,000 stars in the Milky Way galaxy, none of which were known about until the last couple of years!