Could there be a star outside of a Galaxy?
According to current theory stars can and do exist outside of galaxies. They are formed within galaxies and ejected from them by gravitational slingshots. This is most likely to happen with the approach of, or collision with, another galaxy. It is near impossible to detect these single stars in the vastness of space. The stars that you see are within our own galaxy, the Milky Way, with a few exceptions. If you have good viewing you can see the Andromeda Nebula at certain times of the year. If you look at it with a good telescope you will find that it is actually another spiral galaxy like our own. If you are in the southern hemisphere you can see the Magellanic Clouds. These are non spiral galaxies that are satellite galaxies of the Milky Way.
