Here is an intensive picture of the Milky Way by Mike Reid showing, literally, more than a billion stars. I am not certain how they figure such matters, but we'll take the experts' word for it. :-) Our galaxy has at least 100 billion stars in it, so this is truly a infinitely small sample. Suddenly, I am feeling mighty small. Nonetheless, I have never seen anything like this photo. It was was taken with a special infrared filter than cuts through much of the galactic dust that regularly obscures atronomers' views, so much, much more can be seen.